Revert "Support for local unrar installation through an environment variable."
Revert "Support for local unrar installation through an environment variable."

This reverts commit e93bec683f6b2984e9cb5f01b301992e28abe317.

Tenma-Server/Tenma,Tenma-Server/Tenma,hmhrex/Tenma,hmhrex/Tenma,hmhrex/Tenma,Tenma-Server/Tenma