Tests for ide/git.py, ide/api/git.py, deleting unreachable code

removes an unreachable block of code from ide/api/git.py

ide/api/git.py

@@ -61,16 +61,6 @@ def set_project_repo(request, project_id):
                 except:
                     pass
 
-            # Just clear the repo if none specified.
-            if repo == '':
-                project.github_repo = None
-                project.github_branch = None
-                project.github_last_sync = None
-                project.github_last_commit = None
-                project.github_hook_uuid = None
-                project.save()
-                return json_response({'exists': True, 'access': True, 'updated': True, 'branch_exists': True})
-
             if not ide.git.git_verify_tokens(request.user):
                 return json_failure("No GitHub tokens on file.")
 
@@ -153,4 +143,4 @@ def remove_hooks(repo, s):
         if hook.name != 'web':
             continue
         if s in hook.config['url']:
-            hook.delete()
+            hook.delete()