删除无用的依赖

Author: liwangqian

package.json

@@ -282,13 +282,10 @@
     "check-types": "~4",
     "escomplex": "0.2.5",
     "escomplex-traits": "0.2.x",
-    "iconv-lite": "^0.4.24",
-    "jschardet": "^1.6.0",
     "lodash": "^4.17.11",
     "lua-fmt": "^2.6.0",
     "luaparse": "^0.2.1",
     "opn": "^5.4.0",
-    "tree-kill": "^1.2.1",
     "underscore": "^1.9.1",
     "vscode-languageclient": "^5.2.1",
     "vscode-languageserver": "^5.2.1",

test/test.engine.js

@@ -1,5 +1,4 @@
 'use strict';
-const _ = require('underscore');
 const fs = require('fs');
 const engine = require('../server/lib/engine');