refactor: remove unused isGitHub/etc

lib/workers/branch/parent.js

@@ -63,11 +63,6 @@ async function getParentBranch(config) {
     logger.debug('PR is conflicted');
     if (pr.canRebase) {
       logger.info(`Branch is not mergeable and needs rebasing`);
-      // TODO: Move this down to api library
-      if (config.isGitLab || config.isAzure) {
-        logger.info(`Deleting unmergeable branch in order to recreate/rebase`);
-        await platform.deleteBranch(branchName);
-      }
       // Setting parentBranch back to undefined means that we'll use the default branch
       return { parentBranch: undefined };
     }

lib/workers/global/index.js

@@ -104,11 +104,6 @@ async function getRepositoryConfig(globalConfig, repository) {
     globalConfig,
     is.string(repository) ? { repository } : repository
   );
-  repoConfig.isBitbucket = repoConfig.platform === 'bitbucket';
-  repoConfig.isBitbucketServer = repoConfig.platform === 'bitbucket-server';
-  repoConfig.isGitHub = repoConfig.platform === 'github';
-  repoConfig.isGitLab = repoConfig.platform === 'gitlab';
-  repoConfig.isAzure = repoConfig.platform === 'azure';
   repoConfig.localDir = path.join(
     repoConfig.baseDir,
     `./repos/${repoConfig.platform}/${repoConfig.repository}`

test/workers/branch/parent.spec.js

@@ -75,17 +75,6 @@ describe('workers/branch/parent', () => {
       const res = await getParentBranch(config);
       expect(res.parentBranch).toBeUndefined();
     });
-    it('returns undefined if unmergeable and can rebase (gitlab)', async () => {
-      config.isGitLab = true;
-      platform.branchExists.mockReturnValue(true);
-      platform.getBranchPr.mockReturnValue({
-        isConflicted: true,
-        canRebase: true,
-      });
-      const res = await getParentBranch(config);
-      expect(res.parentBranch).toBeUndefined();
-      expect(platform.deleteBranch).toHaveBeenCalledTimes(1);
-    });
     it('returns branchName if automerge branch and not stale', async () => {
       config.automerge = true;
       config.automergeType = 'branch';