buffer: remove deprecated buffer.get/.set methods

These have been deprecated since Apr 27, 2013, and the plan was to
remove them in "node v0.13".

buffer.get(index) is superseded by buffer[index].
buffer.set(index, value) is superseded by buffer[index] = value.

These have never been documented at any point in node's history.

PR-URL: #4594
Fixes: #4587
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Roman Reiss <me@silverwind.io>

lib/buffer.js

@@ -523,24 +523,6 @@ Buffer.prototype.fill = function fill(val, start, end) {
 };
 
 
-// XXX remove in v0.13
-Buffer.prototype.get = internalUtil.deprecate(function get(offset) {
-  offset = ~~offset;
-  if (offset < 0 || offset >= this.length)
-    throw new RangeError('Index out of range');
-  return this[offset];
-}, 'Buffer.get is deprecated. Use array indexes instead.');
-
-
-// XXX remove in v0.13
-Buffer.prototype.set = internalUtil.deprecate(function set(offset, v) {
-  offset = ~~offset;
-  if (offset < 0 || offset >= this.length)
-    throw new RangeError('Index out of range');
-  return this[offset] = v;
-}, 'Buffer.set is deprecated. Use array indexes instead.');
-
-
 // TODO(trevnorris): fix these checks to follow new standard
 // write(string, offset = 0, length = buffer.length, encoding = 'utf8')
 var writeWarned = false;