Make sure that test stuff doesn't end up in bundles

Summary: When bundling a production bundle of flipper-ui / flipper-server, noticed that a lot of irrelevant stuff ends up. Like: `jest`, `metro`, `testing-library`. The whole jungle basically. Will add safety checks in the next diffs that this no longer happens

Reviewed By: passy

Differential Revision: D33186531

fbshipit-source-id: 1e2034153c8c4a3fac02cd9ce27d99224223df7a

desktop/flipper-plugin/src/__tests__/api.node.tsx

@@ -110,7 +110,6 @@ test('Correct top level API exposed', () => {
       "InteractionReporter",
       "Logger",
       "MenuEntry",
-      "MockedConsole",
       "NormalizedMenuEntry",
       "Notification",
       "PluginClient",