Bug 1633662 - Remove unused mozversioncontrol functions r=saschanaz,firefox-build-system-reviewers,glandium

Remove unused mozversioncontrol functions in code

Differential Revision: https://phabricator.services.mozilla.com/D167352

python/mozversioncontrol/mozversioncontrol/__init__.py

@@ -166,10 +166,6 @@ class Repository(object):
         If no email is configured, then None is returned.
         """
 
-    @abc.abstractmethod
-    def get_upstream(self):
-        """Reference to the upstream remote."""
-
     @abc.abstractmethod
     def get_changed_files(self, diff_filter, mode="unstaged", rev=None):
         """Return a list of files that are changed in this repository's
@@ -430,9 +426,6 @@ class HgRepository(Repository):
             return None
         return match.group(1)
 
-    def get_upstream(self):
-        return "default"
-
     def _format_diff_filter(self, diff_filter, for_status=False):
         df = diff_filter.lower()
         assert all(f in self._valid_diff_filter for f in df)
@@ -629,15 +622,6 @@ class GitRepository(Repository):
             return None
         return email.strip()
 
-    def get_upstream(self):
-        ref = self._run("symbolic-ref", "-q", "HEAD").strip()
-        upstream = self._run("for-each-ref", "--format=%(upstream:short)", ref).strip()
-
-        if not upstream:
-            raise MissingUpstreamRepo("Could not detect an upstream repository.")
-
-        return upstream
-
     def get_changed_files(self, diff_filter="ADM", mode="unstaged", rev=None):
         assert all(f.lower() in self._valid_diff_filter for f in diff_filter)