removed explicit Promise declaration from gulpfile

Author: EC2 Default User

algorithm/category.json

@@ -102,7 +102,7 @@
    "etc": {
       "list": {
          "flood_fill": "Flood Fill",
-		 "cellular_automata": "Cellular Automata",
+	 "cellular_automata": "Cellular Automata",
          "create_maze": "Create Maze"
       },
       "name": "Uncategorized"

gulpfile.babel.js

@@ -1,7 +1,5 @@
 'use strict';
 
-var Promise = require('es6-promise').Promise;
-
 import path from 'path';
 import gulp from 'gulp';
 import uglify from 'gulp-uglify';