--- a/.prettierignore
+++ b/.prettierignore
@@ -24,17 +24,16 @@ mobile/android/app/geckoview-prefs.js
 mobile/android/app/mobile.js
 mobile/android/installer/mobile-l10n.js
 modules/libpref/init/all.js
 modules/libpref/test/unit/data/testParser.js
 modules/libpref/test/unit/data/testPrefLocked.js
 modules/libpref/test/unit/data/testPrefSticky.js
 modules/libpref/test/unit/extdata/testExt.js
 remote/pref/remote.js
-services/common/services-common.js
 services/sync/services-sync.js
 services/sync/tests/unit/prefs_test_prefs_store.js
 testing/marionette/prefs/marionette.js
 toolkit/components/telemetry/datareporting-prefs.js
 toolkit/components/telemetry/healthreport-prefs.js
 
 # Ignore testing pref files which aren't parsed normally.
 testing/profiles/**/user.js

--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5648,8 +5648,12 @@ pref("fission.rebuild_frameloaders_on_re
 // true in bug 1550571.
 pref("fission.preserve_browsing_contexts", false);
 
 // Support for legacy customizations that rely on checking the
 // user profile directory for these stylesheets:
 //  * userContent.css
 //  * userChrome.css
 pref("toolkit.legacyUserProfileCustomizations.stylesheets", false);
+
+pref("services.common.log.logger.rest.request", "Debug");
+pref("services.common.log.logger.rest.response", "Debug");
+pref("services.common.log.logger.tokenserverclient", "Debug");

--- a/services/common/moz.build
+++ b/services/common/moz.build
@@ -31,13 +31,9 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] != 'andr
         'hawkrequest.js',
         'tokenserverclient.js',
     ]
 
 TESTING_JS_MODULES.services.common += [
     'modules-testing/logging.js',
 ]
 
-JS_PREFERENCE_FILES += [
-    'services-common.js',
-]
-
 SPHINX_TREES['services'] = 'docs'

deleted file mode 100644
--- a/services/common/services-common.js
+++ /dev/null
@@ -1,13 +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 file contains default preference values for components in
-// services-common.
-
-/* global pref */
-
-pref("services.common.log.logger.rest.request", "Debug");
-pref("services.common.log.logger.rest.response", "Debug");
-
-pref("services.common.log.logger.tokenserverclient", "Debug");