diff --git a/automation/taskcluster/l10n/filter-release-translations.py b/automation/taskcluster/l10n/filter-release-translations.py
deleted file mode 100644
index e1c3cdb8b..000000000
--- a/automation/taskcluster/l10n/filter-release-translations.py
+++ /dev/null
@@ -1,50 +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/.
-
-"""
-This script takes the list of release locales defined in locales.py
-and removes all non-release translations from the application's
-resource folder.
-This script is run before building a release version so that
-those builds only contain locales we actually want to ship.
-"""
-
-import os
-import re
-import shutil
-
-from locales import RELEASE_LOCALES
-
-LANGUAGE_REGEX = re.compile('^[a-z]{2,3}$')
-LANGUAGE_REGION_REGEX = re.compile('^([a-z]{2})-r([A-Z]{2})$')
-
-# Get all resource directories that start with "values-" (and remove the "values-" prefix)
-resources_dir = os.path.join(os.path.dirname(__file__), '..', '..', '..', 'app', 'src', 'main', 'res')
-locale_dirs = [localeDir.replace('values-', '') for localeDir in os.listdir(resources_dir)
-               if os.path.isdir(os.path.join(resources_dir, localeDir))
-               and localeDir.startswith('values-')]
-
-# Remove everything that doesn't look like it's a resource folder for a specific language (e.g. sw600dp)
-locale_dirs = filter(lambda x: LANGUAGE_REGEX.match(x) or LANGUAGE_REGION_REGEX.match(x), locale_dirs)
-
-# Android prefixes regions with an "r" (de-rDE). Remove the prefix.
-locale_dirs = [item.replace('-r','-') for item in locale_dirs]
-
-# Now determine the list of locales that are not in our release list
-locales_to_remove = list(set(locale_dirs) - set(RELEASE_LOCALES))
-
-print "RELEASE LOCALES:", ", ".join(RELEASE_LOCALES)
-print "APP LOCALES:", ", ".join(locale_dirs)
-print "REMOVE:", ", ".join(locales_to_remove) if len(locales_to_remove) > 0 else "-Nothing-"
-
-# Remove unneeded resource folders
-for locale in locales_to_remove:
-    # Build resource folder names from locale: de -> values-de, de-DE -> vlaues-de-rDE
-    parts = locale.split("-")
-    folder = "values-" + (parts[0] if len(parts) == 1 else parts[0] + "-r" + parts[1])
-    path = os.path.join(resources_dir, folder)
-
-    print "* Removing: ", path
-    # This modifies source, which could cause problems if we ever start caching source
-    shutil.rmtree(path)
\ No newline at end of file
diff --git a/automation/taskcluster/l10n/locales.py b/automation/taskcluster/l10n/locales.py
deleted file mode 100644
index 5e2e80fe1..000000000
--- a/automation/taskcluster/l10n/locales.py
+++ /dev/null
@@ -1,59 +0,0 @@
-#!/usr/bin/python
-
-#  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/.
-
-from __future__ import absolute_import, print_function, unicode_literals
-
-import re
-
-OPEN_LOCALES = "locales = ["
-CLOSE_LOCALES = "]"
-
-def trim_to_locale(str):
-    match = re.search('\s*"([a-z]+-?[A-Z]*)",\s*', str)
-    if not match:
-        raise Exception("Failed parsing locale found in l10n.toml: " + str)
-    return match.group(1)
-
-
-# This file is a dumb parser that converts values from '/l10n.toml' to be easily consumed from
-# Python.
-#
-# 'l10n.toml' has a very simple structure, and it is reasonable to believe that this (very basic)
-# algorithm will continue to work as it is changed.
-#
-# Alternatives to custom parsing that were considered:
-# - Using standard library module --- none exists to parse TOML
-# - Importing a TOML parsing module --- introduces an additional build step, complexity, and
-#   security risk
-# - Vendoring a TOML module --- large amount of code given the use case. Introduces a security
-#   risk
-def get_release_locales():
-    with open(r"l10n.toml") as f:
-        file = f.read().splitlines()
-
-    locales_opened = False
-    locales_closed = False
-
-    found_locales = []
-
-    for line in file:
-        if line == OPEN_LOCALES:
-            locales_opened = True
-        elif line == CLOSE_LOCALES:
-            locales_closed = True
-            break
-        elif locales_opened:
-            found_locales.append(trim_to_locale(line))
-
-    if locales_opened == False:
-        raise Exception("Could not find `locales` open in l10n.toml")
-    if locales_closed == False:
-        raise Exception("Could not find `locales` close in l10n.toml")
-
-    return found_locales
-
-
-RELEASE_LOCALES = get_release_locales()
diff --git a/taskcluster/ci/build/kind.yml b/taskcluster/ci/build/kind.yml
index 4af23f07e..5cc328eed 100644
--- a/taskcluster/ci/build/kind.yml
+++ b/taskcluster/ci/build/kind.yml
@@ -100,7 +100,6 @@ jobs:
             release-type: beta
         include-release-version: true
         include-shippable-secrets: true
-        filter-incomplete-translations: true
         run:
             geckoview-engine: geckoBeta
             gradle-build-type: fenixBeta
@@ -113,7 +112,6 @@ jobs:
             release-type: production
         include-release-version: true
         include-shippable-secrets: true
-        filter-incomplete-translations: true
         run:
             geckoview-engine: geckoBeta
             gradle-build-type: fenixProduction
@@ -139,7 +137,6 @@ jobs:
             nightly: true
         include-release-version: true
         include-shippable-secrets: true
-        filter-incomplete-translations: true
         run:
             geckoview-engine: geckoBeta
             gradle-build-type: fennecBeta
@@ -153,7 +150,6 @@ jobs:
             nightly: true
         include-release-version: true
         include-shippable-secrets: true
-        filter-incomplete-translations: true
         run:
             geckoview-engine: geckoBeta
             gradle-build-type: fennecProduction
diff --git a/taskcluster/fenix_taskgraph/transforms/build.py b/taskcluster/fenix_taskgraph/transforms/build.py
index adf771739..bd372e80b 100644
--- a/taskcluster/fenix_taskgraph/transforms/build.py
+++ b/taskcluster/fenix_taskgraph/transforms/build.py
@@ -125,12 +125,3 @@ def add_artifacts(config, tasks):
                 apks[apk["abi"]] = apk_name
 
         yield task
-
-
-@transforms.add
-def filter_incomplete_translation(config, tasks):
-    for task in tasks:
-        if task.pop("filter-incomplete-translations", False):
-            # filter-release-translations modifies source, which could cause problems if we ever start caching source
-            task["run"]["pre-gradlew"].append(["python", "automation/taskcluster/l10n/filter-release-translations.py"])
-        yield task