Clean up files property and .vscodeignore file

Author: koesie10

extensions/ql-vscode/.vscodeignore

@@ -1,17 +1 @@
-.vs/**
-.vscode/**
-.vscode-test/**
-typings/**
-out/test/**
-out/vscode-tests/**
-**/@types/**
-**/*.ts
-test/**
-src/**
 **/*.map
-.gitignore
-gulpfile.js/**
-tsconfig.json
-.prettierrc
-vsc-extension-quickstart.md
-node_modules/**

extensions/ql-vscode/package.json

@@ -42,13 +42,6 @@
     "workspaceContains:.git"
   ],
   "main": "./out/extension",
-  "files": [
-    "gen/*.js",
-    "media/**",
-    "out/**",
-    "package.json",
-    "language-configuration.json"
-  ],
   "contributes": {
     "configurationDefaults": {
       "[ql]": {