Update for Bukkit R5 compatability.

Removed some unused variables.

EssentialsGroupManager/src/Changelog.txt

@@ -142,3 +142,4 @@ v 1.9:
 	- Depreciate PlayerTeleportEvent, PlayerRespawnEvent and PlayerPortalEvent as it's all handled in PlayerChangedWorldEvent.
 	  This also means we no longer update permissions before we change worlds.
 	- A command of '/manload' with no world arguments now performs a full reload of GM.
+	- Update for Bukkit R5 compatability.

EssentialsGroupManager/src/org/anjocaido/groupmanager/events/GMGroupEvent.java

@@ -16,7 +16,6 @@ public class GMGroupEvent extends Event {
     /**
 	 * 
 	 */
-	private static final long serialVersionUID = -5294917600434510451L;
 	private static final HandlerList handlers = new HandlerList();
 
 	@Override

EssentialsGroupManager/src/org/anjocaido/groupmanager/events/GMSystemEvent.java

@@ -15,7 +15,6 @@ public class GMSystemEvent extends Event {
     /**
 	 * 
 	 */
-	private static final long serialVersionUID = -8786811924448821548L;
 	private static final HandlerList handlers = new HandlerList();
 
 	@Override

EssentialsGroupManager/src/org/anjocaido/groupmanager/events/GMUserEvent.java

@@ -16,7 +16,6 @@ public class GMUserEvent extends Event {
     /**
 	 * 
 	 */
-	private static final long serialVersionUID = -5294917600434510451L;
 	private static final HandlerList handlers = new HandlerList();
 
 	@Override