Update EmitterShape.java

The interface code has been updated with two key changes for conciseness and adherence to Java conventions. 

1. The explicit public keyword has been removed from the interface methods, as interface methods are implicitly public by default. 

2. The EmitterShape interface no longer explicitly extends Cloneable. This is because the JmeCloneable interface, which EmitterShape already extends, itself extends Cloneable, thus making the direct extension redundant

jme3-core/src/main/java/com/jme3/effect/shapes/EmitterShape.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009-2012 jMonkeyEngine
+ * Copyright (c) 2009-2025 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -39,14 +39,14 @@ import com.jme3.util.clone.JmeCloneable;
  * This interface declares methods used by all shapes that represent particle emitters.
  * @author Kirill
  */
-public interface EmitterShape extends Savable, Cloneable, JmeCloneable {
+public interface EmitterShape extends Savable, JmeCloneable {
 
     /**
      * This method fills in the initial position of the particle.
      * @param store
      *        store variable for initial position
      */
-    public void getRandomPoint(Vector3f store);
+    void getRandomPoint(Vector3f store);
 
     /**
      * This method fills in the initial position of the particle and its normal vector.
@@ -55,11 +55,11 @@ public interface EmitterShape extends Savable, Cloneable, JmeCloneable {
      * @param normal
      *        store variable for initial normal
      */
-    public void getRandomPointAndNormal(Vector3f store, Vector3f normal);
+    void getRandomPointAndNormal(Vector3f store, Vector3f normal);
 
     /**
      * This method creates a deep clone of the current instance of the emitter shape.
      * @return deep clone of the current instance of the emitter shape
      */
-    public EmitterShape deepClone();
+    EmitterShape deepClone();
 }