Remove unneeded files

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/files_sharing/package.json

-{
-  "name": "files_sharing",
-  "version": "1.0.0",
-  "description": "File sharing in Nextcloud",
-  "main": "files_sharing.js",
-  "directories": {
-    "lib": "lib",
-    "test": "tests"
-  },
-  "scripts": {
-    "build": "webpack --progress --hide-modules --config webpack.prod.js",
-    "dev": "webpack --progress --watch --config webpack.dev.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "author": "",
-  "license": "AGPL-3.0-or-later",
-  "dependencies": {
-    "nextcloud-axios": "^0.1.3",
-    "nextcloud-vue": "^0.5.0",
-    "vue": "^2.5.17",
-    "vuex": "^3.1.0"
-  },
-  "devDependencies": {
-    "@babel/core": "^7.1.0",
-    "@babel/plugin-syntax-dynamic-import": "^7.2.0",
-    "babel-loader": "^8.0.2",
-    "css-loader": "^2.1.0",
-    "node-sass": "^4.11.0",
-    "sass-loader": "^7.1.0",
-    "vue-loader": "^15.4.2",
-    "vue-template-compiler": "^2.5.17",
-    "webpack": "^4.20.0",
-    "webpack-cli": "^3.1.1",
-    "webpack-merge": "^4.1.4"
-  }
-}