Cleanup imports

Author: PaintNinja

src/main/java/net/minecraftforge/eventbus/ListenerList.java

@@ -9,10 +9,8 @@
 import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
-import java.util.Objects;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.atomic.AtomicReference;