do not use custom EGLContextFactory (#18062)

it will crash on some devices

cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxActivity.java

@@ -267,10 +267,9 @@ public abstract class Cocos2dxActivity extends Activity implements Cocos2dxHelpe
         //this line is need on some device if we specify an alpha bits
         if(this.mGLContextAttrs[3] > 0) glSurfaceView.getHolder().setFormat(PixelFormat.TRANSLUCENT);
 
-        // use custom EGLConfigureChooser and EGLContextFactory
+        // use custom EGLConfigureChooser
         Cocos2dxEGLConfigChooser chooser = new Cocos2dxEGLConfigChooser(this.mGLContextAttrs);
         glSurfaceView.setEGLConfigChooser(chooser);
-        glSurfaceView.setEGLContextFactory(new ContextFactory());
 
         return glSurfaceView;
     }
@@ -381,23 +380,4 @@ public abstract class Cocos2dxActivity extends Activity implements Cocos2dxHelpe
             return null;
         }
     }
-
-    private static class ContextFactory implements GLSurfaceView.EGLContextFactory {
-
-        private static int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
-
-        public EGLContext createContext(
-            EGL10 egl, EGLDisplay display, EGLConfig eglConfig) {
-            
-            int[] attributes = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
-            EGLContext context = egl.eglCreateContext(
-                display, eglConfig, EGL10.EGL_NO_CONTEXT, attributes);
-
-            return context;
-        }
-
-        public void destroyContext(EGL10 egl, EGLDisplay display, EGLContext context) {
-            egl.eglDestroyContext(display, context);
-        }
-    }
 }

cocos/platform/android/java/src/org/cocos2dx/lib/Cocos2dxGLSurfaceView.java

@@ -94,6 +94,7 @@ public class Cocos2dxGLSurfaceView extends GLSurfaceView {
     }
 
     protected void initView() {
+        this.setEGLContextClientVersion(2);
         this.setFocusableInTouchMode(true);
 
         Cocos2dxGLSurfaceView.mCocos2dxGLSurfaceView = this;