internal/util: remove printDeprecationWarning

Removes the internal/util printDeprecationWarning method

PR-URL: https://github.com/nodejs/node/pull/8166
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

lib/internal/util.js

@@ -19,16 +19,6 @@ exports.deprecate = function(fn, msg) {
   return exports._deprecate(fn, msg);
 };
 
-// All the internal deprecations have to use this function only, as this will
-// prepend the prefix to the actual message.
-exports.printDeprecationMessage = function(msg, warned, ctor) {
-  if (warned || process.noDeprecation)
-    return true;
-  process.emitWarning(msg, 'DeprecationWarning',
-                      ctor || exports.printDeprecationMessage);
-  return true;
-};
-
 exports.error = function(msg) {
   const fmt = `${prefix}${msg}`;
   if (arguments.length > 1) {

test/parallel/test-process-no-deprecation.js

@@ -1,5 +1,5 @@
 'use strict';
-// Flags: --expose_internals --no-warnings
+// Flags: --no-warnings
 
 // The --no-warnings flag only supresses writing the warning to stderr, not the
 // emission of the corresponding event. This test file can be run without it.
@@ -15,8 +15,7 @@ function listener() {
 
 process.addListener('warning', listener);
 
-const internalUtil = require('internal/util');
-internalUtil.printDeprecationMessage('Something is deprecated.');
+process.emitWarning('Something is deprecated.', 'DeprecationWarning');
 
 // The warning would be emitted in the next tick, so continue after that.
 process.nextTick(common.mustCall(() => {
@@ -29,5 +28,5 @@ process.nextTick(common.mustCall(() => {
     assert.strictEqual(warning.message, 'Something else is deprecated.');
   }));
 
-  internalUtil.printDeprecationMessage('Something else is deprecated.');
+  process.emitWarning('Something else is deprecated.', 'DeprecationWarning');
 }));