Remove contribute.json (#29707)

as the contribute.json project is now decommissioned.

contribute.json

@@ -1,13 +0,0 @@
-{
-    "name": "Element",
-    "description": "A glossy Matrix collaboration client for the web.",
-    "repository": {
-        "url": "https://github.com/element-hq/element-web",
-        "license": "AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial"
-    },
-    "bugs": {
-        "list": "https://github.com/element-hq/element-web/issues",
-        "report": "https://github.com/element-hq/element-web/issues/new/choose"
-    },
-    "keywords": ["chat", "riot", "matrix"]
-}

package.json

@@ -22,8 +22,7 @@
         "LICENSE",
         "README.md",
         "AUTHORS.rst",
-        "package.json",
-        "contribute.json"
+        "package.json"
     ],
     "style": "bundle.css",
     "matrix_i18n_extra_translation_funcs": [

webpack.config.js

@@ -673,7 +673,6 @@ module.exports = (env, argv) => {
                     { from: "decoder-ring/**", context: path.resolve(__dirname, "res") },
                     { from: "media/**", context: path.resolve(__dirname, "res/") },
                     { from: "config.json", noErrorOnMissing: true },
-                    "contribute.json",
                     // Element Call embedded widget
                     {
                         from: "**",