refactor: remove null onboarding case

lib/workers/repository/onboarding/pr/index.js

@@ -5,9 +5,6 @@ const { getPrList } = require('./pr-list');
 
 async function ensureOnboardingPr(config, branches) {
   logger.debug('ensureOnboardingPr()');
-  if (config.repoIsOnboarded) {
-    return null;
-  }
   logger.trace({ config });
   const onboardingBranch = `renovate/configure`;
   const onboardingPrTitle = 'Configure Renovate';

test/workers/repository/onboarding/pr/index.spec.js

@@ -19,10 +19,6 @@ describe('workers/repository/onboarding/pr', () => {
       platform.createPr.mockReturnValue({});
     });
     let createPrBody;
-    it('returns if onboarded', async () => {
-      config.repoIsOnboarded = true;
-      expect(await ensureOnboardingPr(config, [])).toBe(null);
-    });
     it('creates PR', async () => {
       await ensureOnboardingPr(config, []);
       expect(platform.createPr.mock.calls).toHaveLength(1);