Remove no longer needed index.web.dev.html

Summary: This is a duplicate, is not needed, causes confusion.

Reviewed By: aigoncharov

Differential Revision: D51307091

fbshipit-source-id: 4d55d727ea5f20100ecd15ad6e23aa0c01722524

desktop/scripts/build-flipper-server-release.tsx

@@ -244,7 +244,6 @@ async function copyStaticResources(outDir: string, versionNumber: string) {
     'icon.png',
     'icon_grey.png',
     'icons.json',
-    'index.web.dev.html',
     'index.web.html',
     'install_desktop.svg',
     'loading.html',