revert EffLoadServerIcon invalid ERS implementation

Author: NotroDev

src/main/java/ch/njol/skript/effects/EffLoadServerIcon.java

@@ -36,7 +36,7 @@
 		set the icon to a random server icon out of {server-icons::*}
 	""")
 @Since("2.3")
-public class EffLoadServerIcon extends AsyncEffect implements EventRestrictedSyntax {
+public class EffLoadServerIcon extends AsyncEffect {
 
 	static {
 		Skript.registerEffect(EffLoadServerIcon.class, "load [the] server icon (from|of) [the] [image] [file] %string%");
@@ -56,11 +56,6 @@ public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelaye
 		return true;
 	}
 
-	@Override
-	public Class<? extends Event>[] supportedEvents() {
-		return CollectionUtils.array(PaperServerListPingEvent.class);
-	}
-
     @Override
     protected void execute(Event e) {
 		String pathString = path.getSingle(e);