Remove modules from source

node_modules/registry-auth-token/base64.js

@@ -1,14 +0,0 @@
-const safeBuffer = require('safe-buffer').Buffer
-
-function decodeBase64 (base64) {
-  return safeBuffer.from(base64, 'base64').toString('utf8')
-}
-
-function encodeBase64 (string) {
-  return safeBuffer.from(string, 'utf8').toString('base64')
-}
-
-module.exports = {
-  decodeBase64: decodeBase64,
-  encodeBase64: encodeBase64
-}