redirect-path: cleaning up hard-coded redirection pathes

[myfreeer]

Part of #445 .
The redirect-path.ts came from a very early stage when kuma is the backend engine of mdn, a lot of urls collected from many manually runs are placed into here to avoid issues like redirection loops and incorrect links.
This is the first attempt to clean up this file after yari was introduced, and the link layout is more stable now, and most contents get translated.

1. In mdnRedirectPath, for each locale here, if both the key and value path not exists in all locales, remove it.
2. In mdnLocaleRedirectPath, if both the key and value path not exists, remove it.
3. In hardCodedRedirectUrl, if both the key and value path not exists, remove it.

This steps could be done via scripts.

[myfreeer]

scripts.zip
Clean up scripts