Replace custom update system with forge update checker

src/main/java/com/replaymod/extras/ReplayModExtras.java

@@ -29,8 +29,7 @@ public class ReplayModExtras {
             FullBrightness.class,
             HotkeyButtons.class,
             LocalizationExtra.class,
-            OpenEyeExtra.class,
-            VersionChecker.class
+            OpenEyeExtra.class
     );
 
     private Logger logger;