Stop overriding upstream papirus-folders script

Since, [papirus-folders v1.13.0](https://github.com/PapirusDevelopmentTeam/papirus-folders/releases/tag/v1.13.0) supports auto-detect available colors. See https://github.com/PapirusDevelopmentTeam/papirus-folders/commit/f4313e93b04440eaee8e60589be981cbdb954c30
So you don't need to override the upstream papirus-folders script with your install script anymore.