Revert "AnimComposer: return AnimLayer on the makeLayer and removeLayer metho…"

This reverts commit deef7489a0d4cb13b50fd105214cfdd58b479686.

jme3-core/src/main/java/com/jme3/anim/AnimComposer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009-2024 jMonkeyEngine
+ * Copyright (c) 2009-2022 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -313,24 +313,21 @@ public class AnimComposer extends AbstractControl {
     /**
      * Add a layer to this composer.
      *
-     * @param name The desired name for the new layer
-     * @param mask The desired mask for the new layer (alias created)
-     * @return a new layer
+     * @param name the desired name for the new layer
+     * @param mask the desired mask for the new layer (alias created)
      */
-    public AnimLayer makeLayer(String name, AnimationMask mask) {
+    public void makeLayer(String name, AnimationMask mask) {
         AnimLayer l = new AnimLayer(name, mask);
         layers.put(name, l);
-        return l;
     }
 
     /**
      * Remove specified layer. This will stop the current action on this layer.
      *
      * @param name The name of the layer to remove.
-     * @return The removed layer.
      */
-    public AnimLayer removeLayer(String name) {
-        return layers.remove(name);
+    public void removeLayer(String name) {
+        layers.remove(name);
     }
 
     /**