Don't include ghost version in variables

src/freedombone-app-ghost

 GHOST_HASH='244faad0b16eb1b90c8095f1e536db65299a3a2d85a20af76342be3707522b38'
 GHOST_DOWNLOAD_URL="https://github.com/TryGhost/Ghost/releases/download/${GHOST_VERSION}/Ghost-${GHOST_VERSION}.zip"
 
-ghost_variables=(GHOST_VERSION
-                 GHOST_DOMAIN_NAME
+ghost_variables=(GHOST_DOMAIN_NAME
                  GHOST_CODE
                  GHOST_ADMIN_PASSWORD
                  ONION_ONLY