Bug 1631409: run multi-l10n step for artifact builds to fix test failures on try r=firefox-build-system-reviewers,rstewart

Differential Revision: https://phabricator.services.mozilla.com/D80701

python/mozbuild/mozbuild/mach_commands.py

@@ -1424,13 +1424,6 @@ class L10NCommands(MachCommandBase):
     @CommandArgument('--verbose', action='store_true',
                      help='Log informative status messages.')
     def package_l10n(self, verbose=False, locales=[]):
-        backends = self.substs['BUILD_BACKENDS']
-        if 'RecursiveMake' not in backends:
-            self.log(logging.ERROR, 'package-multi-locale', {'backends': backends},
-                     "Multi-locale packaging requires the full (non-artifact) "
-                     "'RecursiveMake' build backend; got {backends}.")
-            return 1
-
         if 'en-US' not in locales:
             self.log(logging.WARN, 'package-multi-locale', {'locales': locales},
                      'List of locales does not include default locale "en-US": '

testing/mozharness/mozharness/mozilla/building/buildbase.py

@@ -835,10 +835,6 @@ items from that key's value."
             self.info("Not a nightly build, skipping multi l10n.")
             return
 
-        if os.environ.get('USE_ARTIFACT'):
-            self.info("Artifact build, skipping multi l10n.")
-            return
-
         dirs = self.query_abs_dirs()
         base_work_dir = dirs['base_work_dir']
         work_dir = dirs['abs_work_dir']