refactor(config/massage): remove irrelevant code (#32971)

Author: RahulGautamSingh

lib/config/massage.spec.ts

@@ -17,15 +17,6 @@ describe('config/massage', () => {
       expect(Array.isArray(res.schedule)).toBeTrue();
     });
 
-    it('massages npmToken', () => {
-      const config: RenovateConfig = {
-        npmToken: 'some-token',
-      };
-      expect(massage.massageConfig(config)).toEqual({
-        npmrc: '//registry.npmjs.org/:_authToken=some-token\n',
-      });
-    });
-
     it('massages packageRules matchUpdateTypes', () => {
       const config: RenovateConfig = {
         packageRules: [

lib/config/massage.ts

@@ -21,9 +21,6 @@ export function massageConfig(config: RenovateConfig): RenovateConfig {
   for (const [key, val] of Object.entries(config)) {
     if (allowedStrings.includes(key) && is.string(val)) {
       massagedConfig[key] = [val];
-    } else if (key === 'npmToken' && is.string(val) && val.length < 50) {
-      massagedConfig.npmrc = `//registry.npmjs.org/:_authToken=${val}\n`;
-      delete massagedConfig.npmToken;
     } else if (is.array(val)) {
       massagedConfig[key] = [];
       val.forEach((item) => {