feat: "server_exists" check

SOURCES/main/lib/game.lib

@@ -18,7 +18,7 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
-	
+
 function game_fix_permissions () # $*: Instance[s]
 {
 	local InstanceList="$*"
@@ -100,12 +100,6 @@ function game_validate ()
 	instance_start
 }
 
-function server_exists ()
-{
-	test -x "$AppBin"
-	return $?
-}
-
 function first_install ()
 {
 	include /etc/steamcmd/steamcmd.conf