diff --git a/taskcluster/ci/release-notify-promote/kind.yml b/taskcluster/ci/release-notify-promote/kind.yml
deleted file mode 100644
index 5db113b9c..000000000
--- a/taskcluster/ci/release-notify-promote/kind.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
----
-loader: taskgraph.loader.transform:loader
-
-transforms:
-    - fenix_taskgraph.transforms.release_deps:transforms
-    - taskgraph.transforms.release_notifications:transforms
-    - taskgraph.transforms.task:transforms
-
-kind-dependencies:
-    - push-apk
-
-primary-dependency: push-apk
-
-group-by: build-type
-
-only-for-build-types:
-    - beta
-    - release
-
-task-defaults:
-    attributes:
-        shipping_phase: promote
-    name: notify-release-drivers-promote
-    description: Sends email to release-drivers telling release was promoted.
-    worker-type: succeed
-    worker:
-        implementation: succeed
-    notifications:
-        subject: "{config[params][project]} {config[params][version]} build{config[params][build_number]} has been pushed to the closed testing track on Google Play"
-        emails:
-            by-level:
-                '3': ["release-signoff@mozilla.org"]
-                default: ["{config[params][owner]}"]
-
-tasks:
-    beta:
-        attributes:
-            release-type: beta
-    release:
-        attributes:
-            release-type: release
diff --git a/taskcluster/ci/release-notify-ship/kind.yml b/taskcluster/ci/release-notify-ship/kind.yml
deleted file mode 100644
index 91c6124fd..000000000
--- a/taskcluster/ci/release-notify-ship/kind.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
----
-loader: taskgraph.loader.transform:loader
-
-transforms:
-    - fenix_taskgraph.transforms.release_deps:transforms
-    - taskgraph.transforms.release_notifications:transforms
-    - taskgraph.transforms.task:transforms
-
-kind-dependencies:
-    - push-apk
-    - github-release
-    - version-bump
-    - mark-as-shipped
-
-primary-dependency: push-apk
-
-group-by: build-type
-
-only-for-build-types:
-    - beta
-    - release
-
-task-defaults:
-    attributes:
-        shipping_phase: ship
-    name: notify-release-drivers-ship
-    description: Sends email to release-drivers telling release was shipped.
-    worker-type: succeed
-    worker:
-        implementation: succeed
-    notifications:
-        subject: "{config[params][project]} {config[params][version]} build{config[params][build_number]} has been tagged in GitHub"
-        emails:
-            by-level:
-                '3': ["release-signoff@mozilla.org"]
-                default: ["{config[params][owner]}"]
-
-tasks:
-    beta:
-        attributes:
-            release-type: beta
-    release:
-        attributes:
-            release-type: release
diff --git a/taskcluster/fenix_taskgraph/transforms/notify.py b/taskcluster/fenix_taskgraph/transforms/notify.py
deleted file mode 100644
index 565da211a..000000000
--- a/taskcluster/fenix_taskgraph/transforms/notify.py
+++ /dev/null
@@ -1,36 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-"""
-Handle notifications like emails.
-"""
-
-from taskgraph.transforms.base import TransformSequence
-
-transforms = TransformSequence()
-
-
-@transforms.add
-def add_notify_email(config, tasks):
-    for task in tasks:
-        notify = task.pop("notify", {})
-        email_config = notify.get("email")
-        if email_config:
-            extra = task.setdefault("extra", {})
-            notify = extra.setdefault("notify", {})
-            notify["email"] = {
-                "content": email_config["content"],
-                "subject": email_config["subject"],
-                "link": email_config.get("link", None),
-            }
-
-            routes = task.setdefault("routes", [])
-            routes.extend(
-                [
-                    "notify.email.{}.on-{}".format(address, reason)
-                    for address in email_config["to-addresses"]
-                    for reason in email_config["on-reasons"]
-                ]
-            )
-
-        yield task
diff --git a/taskcluster/fenix_taskgraph/transforms/release_deps.py b/taskcluster/fenix_taskgraph/transforms/release_deps.py
deleted file mode 100644
index 58f74b8ff..000000000
--- a/taskcluster/fenix_taskgraph/transforms/release_deps.py
+++ /dev/null
@@ -1,45 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-"""
-Add dependencies to release tasks.
-"""
-
-from taskgraph.transforms.base import TransformSequence
-
-PHASES = ["build", "promote", "push", "ship"]
-
-transforms = TransformSequence()
-
-
-@transforms.add
-def add_dependencies(config, tasks):
-    for task in tasks:
-        dependencies = {}
-        # Add any kind_dependencies_tasks with matching release_type as dependencies
-        release_type = task["attributes"].get("release-type")
-        phase = task["attributes"].get("shipping_phase")
-        if release_type is None:
-            continue
-
-        for dep_task in config.kind_dependencies_tasks.values():
-            # Weed out unwanted tasks.
-            # XXX we have run-on-projects which specifies the on-push behavior;
-            # we need another attribute that specifies release promotion,
-            # possibly which action(s) each task belongs in.
-
-            # We can only depend on tasks in the current or previous phases
-            dep_phase = dep_task.attributes.get("shipping_phase")
-            if dep_phase and PHASES.index(dep_phase) > PHASES.index(phase):
-                continue
-
-            # Add matching release_type tasks to deps
-            if (
-                dep_task.task.get("release-type") == release_type
-                or dep_task.attributes.get("release-type") == release_type
-            ):
-                dependencies[dep_task.label] = dep_task.label
-
-        task.setdefault("dependencies", {}).update(dependencies)
-
-        yield task