chore: remove duplicate internal deprecations module (just use deprecate) (#18352)

lib/common/api/module-list.js

@@ -7,6 +7,5 @@ module.exports = [
   { name: 'shell', file: 'shell' },
   // The internal modules, invisible unless you know their names.
   { name: 'deprecate', file: 'deprecate', private: true },
-  { name: 'deprecations', file: 'deprecations', private: true },
   { name: 'isPromise', file: 'is-promise', private: true }
 ]