Remove env-var after moving web-files on Fedora

* when running Jellyfin as a user from a terminal without passing
  arguments, it would not find the web-files. They were moved in the
  JF-web build for Fedora, so this env-var would point to an invalid
  location. By removing it, JF now checks the default location.
* fixes jellyfin/jellyfin-web#2059

fedora/jellyfin.env

@@ -21,7 +21,7 @@ JELLYFIN_LOG_DIR="/var/log/jellyfin"
 JELLYFIN_CACHE_DIR="/var/cache/jellyfin"
 
 # web client path, installed by the jellyfin-web package
-JELLYFIN_WEB_OPT="--webdir=/usr/share/jellyfin-web"
+# JELLYFIN_WEB_OPT="--webdir=/usr/share/jellyfin-web"
 
 # In-App service control
 JELLYFIN_RESTART_OPT="--restartpath=/usr/libexec/jellyfin/restart.sh"