diff --git a/taskcluster/fenix_taskgraph/parameters.py b/taskcluster/fenix_taskgraph/parameters.py
deleted file mode 100644
index 7d012d452..000000000
--- a/taskcluster/fenix_taskgraph/parameters.py
+++ /dev/null
@@ -1,24 +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/.
-
-import os
-
-from taskgraph.parameters import extend_parameters_schema
-from voluptuous import All, Any, Optional, Range, Required
-
-
-extend_parameters_schema(
-    {
-        Required("pull_request_number"): Any(All(int, Range(min=1)), None),
-        Required("release_type", default=""): str,
-        Optional("shipping_phase"): Any("build", "promote", "ship", None),
-    }
-)
-
-
-def get_decision_parameters(graph_config, parameters):
-    parameters.setdefault("release_type", "")
-
-    pr_number = os.environ.get("MOBILE_PULL_REQUEST_NUMBER", None)
-    parameters["pull_request_number"] = None if pr_number is None else int(pr_number)