Remove monaco dev build files

[MichaelPetrinolis]

remove dev build js files from Resources.
Should we also remove the js map files and/or rename the monaco folders (remove the min folder under monaco)?
Map files are ~10MB uncompressed.

[Skrypt]

Unless these map files are generated by our own gulpfile.js they are unecessary. The problem is that if any changes are made then the .map files will not be updated. We should not update these assets so keeping the .map files is unecessary.

[MichaelPetrinolis]

@Skrypt these are the map files distributed with monaco editor and copied from node_modules through assets.json pipeline. But I agree they are unnecessary.

[MichaelPetrinolis]

@Skrypt Monaco has its own AMD loader to handle its resources. I think that if we create the *.min.js versions it will not work, as it will keep requesting the *.js files and not the *.min.js. Also @sebastienros suggested to remove source files in #8266 (comment)