Fix performance issue related to determining whether branches are remote tracking branches

Signed-off-by: Jacob Stopak <jacob@initialcommit.io>

Author: initialcommit-io

git_sim/git_sim_base_command.py

@@ -467,17 +467,17 @@ def draw_branch(self, commit, i, make_branches_remote=False):
 
         for branch in branches:
             if (
-                not self.is_remote_tracking_branch(branch)  # local branch
+                branch not in remote_tracking_branches # local branch
                 and commit.hexsha == self.repo.heads[branch].commit.hexsha
             ) or (
-                self.is_remote_tracking_branch(branch)  # remote tracking branch
+                branch in remote_tracking_branches # remote tracking branch
                 and commit.hexsha == remote_tracking_branches[branch]
             ):
                 text = (
                     (make_branches_remote + "/" + branch)
                     if (
                         make_branches_remote
-                        and not self.is_remote_tracking_branch(branch)
+                        and branch not in remote_tracking_branches 
                     )
                     else branch
                 )
@@ -1178,15 +1178,6 @@ def get_remote_tracking_branches(self):
                     remote_tracking_branches[ref.name] = ref.commit.hexsha
         return remote_tracking_branches
 
-    def is_remote_tracking_branch(self, branch):
-        remote_refs = [remote.refs for remote in self.repo.remotes]
-        remote_tracking_branches = {}
-        for reflist in remote_refs:
-            for ref in reflist:
-                if "HEAD" not in ref.name and ref.name not in remote_tracking_branches:
-                    remote_tracking_branches[ref.name] = ref.commit.hexsha
-        return branch in remote_tracking_branches
-
     def create_zone_text(
         self,
         firstColumnFileNames,