Bug 1402955 - Fix bouncer_firefox_beta.py syntax. r=rail DONTBUILD

MozReview-Commit-ID: 1vsc16wC7hO

--HG--
extra : rebase_source : 5ffbf596d68dabf3e21e111dd9dd0681523217ea

testing/mozharness/configs/releases/bouncer_firefox_beta.py

@@ -106,7 +106,6 @@ config = {
             },
         },
     },
-    },
     "partials": {
         "releases-dir": {
             "product-name": "Firefox-%(version)s-Partial-%(prev_version)s",