Update TerrainPatch.java (#1439)

jme3-terrain/src/main/java/com/jme3/terrain/geomipmap/TerrainPatch.java

@@ -54,8 +54,6 @@ import com.jme3.util.clone.Cloner;
 import java.io.IOException;
 import java.nio.Buffer;
 import java.nio.FloatBuffer;
-import java.nio.IntBuffer;
-import java.nio.ShortBuffer;
 import java.util.HashMap;
 import java.util.List;