Bug 1594197 - remove geckoview-docs task from the default task list; r=ahal,snorp

This task cannot succeed on try, because it doesn't have the permissions
to upload the generated docs.  Let's just disallow people from selecting it.

Differential Revision: https://phabricator.services.mozilla.com/D51919

--HG--
extra : moz-landing-system : lando

tools/tryselect/selectors/fuzzy.py

@@ -43,7 +43,8 @@ TASK_DURATION_TAG_FILE = os.path.join(get_state_dir(
 TARGET_TASK_FILTERS = (
     '.*-ccov\/.*',
     'windows10-aarch64/opt.*',
-    'android-hw.*'
+    'android-hw.*',
+    '.*android-geckoview-docs.*',
 )