chore: Remove gesture monkey patch.

It no longer seems required.

Author: BenHenning

src/gesture_monkey_patch.js

@@ -10,7 +10,6 @@
  * @author [email protected] (Abby Schmiedt)
  */
 
-import './gesture_monkey_patch';
 import './toolbox_monkey_patch';
 
 import * as Blockly from 'blockly/core';