diff --git a/app/models/api_token.rb b/app/models/api_token.rb
index ce07dcc..65ed089 100644
--- a/app/models/api_token.rb
+++ b/app/models/api_token.rb
@@ -1,7 +1,5 @@
 class ApiToken < ActiveRecord::Base
 
-  ApiTokenTakenError = Class.new(StandardError)
-
   belongs_to :user
 
   validates :user, :token, presence: true
@@ -10,10 +8,6 @@ class ApiToken < ActiveRecord::Base
   scope :active, -> { where(revoked_at: nil) }
   scope :revoked, -> { where('revoked_at IS NOT NULL') }
 
-  def self.for_token(token)
-    where(token: token).first
-  end
-
   def self.create_with_tmp_user!(token, username)
     transaction do
       ApiToken.create!(
@@ -23,13 +17,6 @@ class ApiToken < ActiveRecord::Base
     end
   end
 
-  def reassign_to(target_user)
-    return if target_user == user
-    raise ApiTokenTakenError if taken?
-
-    user.merge_to(target_user)
-  end
-
   def revoke!
     update!(revoked_at: Time.now)
   end
diff --git a/app/models/user.rb b/app/models/user.rb
index af8628a..ad8018e 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -36,15 +36,6 @@ class User < ActiveRecord::Base
     with_username.where(username: username).first!
   end
 
-  def self.for_api_token(token)
-    return nil if token.blank?
-
-    joins(:api_tokens).where(
-      'api_tokens.token' => token,
-      'api_tokens.revoked_at' => nil,
-    ).first
-  end
-
   def self.for_auth_token(auth_token)
     where(auth_token: auth_token).first
   end
@@ -88,26 +79,6 @@ class User < ActiveRecord::Base
     theme_name && Theme.for_name(theme_name)
   end
 
-  def assign_api_token(token)
-    api_token = ApiToken.for_token(token)
-
-    if api_token
-      api_token.reassign_to(self)
-    else
-      api_token = api_tokens.create!(token: token)
-    end
-
-    api_token
-  end
-
-  def merge_to(target_user)
-    self.class.transaction do |tx|
-      asciicasts.update_all(user_id: target_user.id, updated_at: DateTime.now)
-      api_tokens.update_all(user_id: target_user.id, updated_at: DateTime.now)
-      destroy
-    end
-  end
-
   def public_asciicast_count
     asciicasts.non_private.count
   end
diff --git a/spec/controllers/api_tokens_controller_spec.rb b/spec/controllers/api_tokens_controller_spec.rb
deleted file mode 100644
index d8c4bf2..0000000
--- a/spec/controllers/api_tokens_controller_spec.rb
+++ /dev/null
@@ -1,60 +0,0 @@
-require 'rails_helper'
-
-describe ApiTokensController do
-
-  describe '#create' do
-    subject { get :create, api_token: 'a-toh-can' }
-
-    let(:user) { double('user', assign_api_token: nil, username: 'foobar') }
-
-    before do
-      login_as(user)
-    end
-
-    context 'for guest user' do
-      let(:user) { nil }
-
-      before do
-        subject
-      end
-
-      it { should redirect_to(new_login_path) }
-
-      specify { expect(flash[:notice]).to match(/log in to proceed/) }
-    end
-
-    context "when assigning succeeds" do
-      before do
-        allow(user).to receive(:assign_api_token).with('a-toh-can')
-        subject
-      end
-
-      it { should redirect_to(public_profile_path(username: 'foobar')) }
-
-      specify { expect(flash[:notice]).to_not be_blank }
-    end
-
-    context "when token is invalid" do
-      before do
-        allow(user).to receive(:assign_api_token).with('a-toh-can').
-          and_raise(ActiveRecord::RecordInvalid, ApiToken.new)
-      end
-
-      it 'displays error page' do
-        expect(subject).to render_template(:error)
-      end
-    end
-
-    context "when token is taken" do
-      before do
-        allow(user).to receive(:assign_api_token).with('a-toh-can').
-          and_raise(ApiToken::ApiTokenTakenError)
-      end
-
-      it 'displays error page' do
-        expect(subject).to render_template(:error)
-      end
-    end
-  end
-
-end
diff --git a/spec/models/api_token_spec.rb b/spec/models/api_token_spec.rb
index 59c4906..9d350b9 100644
--- a/spec/models/api_token_spec.rb
+++ b/spec/models/api_token_spec.rb
@@ -13,64 +13,4 @@ describe ApiToken do
     it { should validate_uniqueness_of(:token) }
   end
 
-  describe '.for_token' do
-    subject { described_class.for_token(token) }
-
-    context "when ApiToken with given token exists" do
-      let(:token) { attributes_for(:api_token)[:token] }
-      let!(:api_token) { create(:api_token, token: token) }
-
-      it { should eq(api_token) }
-    end
-
-    context "when ApiToken with given token doesn't exist" do
-      let(:token) { 'no-no' }
-
-      it { should be(nil) }
-    end
-  end
-
-  describe '#reassign_to' do
-    subject { api_token.reassign_to(target_user) }
-
-    let(:api_token) { described_class.new }
-    let(:user) { User.new }
-    let(:target_user) { User.new }
-
-    before do
-      api_token.user = user
-      allow(user).to receive(:merge_to)
-    end
-
-    context "when source user is unconfirmed user" do
-      before do
-        allow(user).to receive(:confirmed?) { false }
-      end
-
-      it "merges user to target user" do
-        subject
-        expect(user).to have_received(:merge_to).with(target_user)
-      end
-    end
-
-    context "when target user is the same user" do
-      let(:target_user) { user }
-
-      it "doesn't do anything" do
-        subject
-        expect(user).to_not have_received(:merge_to)
-      end
-    end
-
-    context "when source user is confirmed user" do
-      before do
-        allow(user).to receive(:confirmed?) { true }
-      end
-
-      it "raises ApiTokenTakenError" do
-        expect { subject }.to raise_error(ApiToken::ApiTokenTakenError)
-      end
-    end
-  end
-
 end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 35b4233..405ba83 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -43,22 +43,6 @@ describe User do
     end
   end
 
-  describe '.for_api_token' do
-    subject { described_class.for_api_token(token) }
-
-    let(:token) { 'f33e6188-f53c-11e2-abf4-84a6c827e88b' }
-
-    context "when token exists" do
-      let!(:existing_token) { create(:api_token, token: token) }
-
-      it { should eq(existing_token.user) }
-    end
-
-    context "when token doesn't exist" do
-      it { should be(nil) }
-    end
-  end
-
   describe '.for_auth_token' do
     subject { described_class.for_auth_token(auth_token) }
 
@@ -106,36 +90,6 @@ describe User do
     end
   end
 
-  describe '#assign_api_token' do
-    subject { user.assign_api_token(token) }
-
-    let(:user) { create(:user) }
-    let(:token) { 'a33e6188-f53c-11e2-abf4-84a6c827e88b' }
-
-    before do
-      allow(ApiToken).to receive(:for_token).with(token) { api_token }
-    end
-
-    context "when given token doesn't exist" do
-      let(:api_token) { nil }
-
-      it { should be_kind_of(ApiToken) }
-      it { should be_persisted }
-      specify { expect(subject.token).to eq(token) }
-    end
-
-    context "when given token already exists" do
-      let(:api_token) { double('api_token', reassign_to: nil) }
-
-      it "reassigns it to the user" do
-        subject
-        expect(api_token).to have_received(:reassign_to).with(user)
-      end
-
-      it { should be(api_token) }
-    end
-  end
-
   describe '#asciicast_count' do
     subject { user.asciicast_count }
 
@@ -160,45 +114,4 @@ describe User do
     end
   end
 
-  describe '#merge_to' do
-    subject { user.merge_to(target_user) }
-
-    let(:user) { create(:user) }
-    let(:target_user) { create(:user) }
-    let!(:api_token_1) { create(:api_token, user: user) }
-    let!(:api_token_2) { create(:api_token, user: user) }
-    let!(:asciicast_1) { create(:asciicast, user: user) }
-    let!(:asciicast_2) { create(:asciicast, user: user) }
-    let(:updated_at) { 1.hour.from_now }
-
-    before do
-      Timecop.freeze(updated_at) do
-        subject
-      end
-    end
-
-    it "reassigns all user api tokens to the target user" do
-      api_token_1.reload
-      api_token_2.reload
-
-      expect(api_token_1.user).to eq(target_user)
-      expect(api_token_2.user).to eq(target_user)
-      expect(api_token_1.updated_at.to_i).to eq(updated_at.to_i)
-      expect(api_token_2.updated_at.to_i).to eq(updated_at.to_i)
-    end
-
-    it "reassigns all user asciicasts to the target user" do
-      asciicast_1.reload
-      asciicast_2.reload
-
-      expect(asciicast_1.user).to eq(target_user)
-      expect(asciicast_2.user).to eq(target_user)
-      expect(asciicast_1.updated_at.to_i).to eq(updated_at.to_i)
-      expect(asciicast_2.updated_at.to_i).to eq(updated_at.to_i)
-    end
-
-    it "removes the source user" do
-      expect(user).to be_destroyed
-    end
-  end
 end