GLRenderer: remove GL_APPLE_limited_npot

That extension doesn't indicate NPOT support, just limited support same as on the level OpenGL ES 2.0.

jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java

@@ -366,7 +366,6 @@ public class GLRenderer implements Renderer {
 
         if (hasExtension("GL_ARB_texture_non_power_of_two") || 
             hasExtension("GL_OES_texture_npot") ||
-            hasExtension("GL_APPLE_texture_2D_limited_npot") ||
             caps.contains(Caps.OpenGL30)) {
             caps.add(Caps.NonPowerOfTwoTextures);
         } else {