Clean up EGLPreRotation Test

EGLPreRotationBlitFramebufferTest are passing on
Pixel 6. Skip the failed tests on Pixel4 devices only.

Bug: b/172867704
Bug: angleproject:5044
Change-Id: I23744cec20bf7e74272532a00420d1488398cda8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4590228
Commit-Queue: Yuxin Hu <yuxinhu@google.com>
Reviewed-by: Ian Elliott <ianelliott@google.com>

src/tests/egl_tests/EGLPreRotationTest.cpp

@@ -1113,7 +1113,7 @@ TEST_P(EGLPreRotationBlitFramebufferTest, BlitStencilWithFlip)
     ANGLE_SKIP_TEST_IF(IsLinux() && isSwiftshader());
 
     // We need to fix blit with pre-rotation. http://anglebug.com/5044
-    ANGLE_SKIP_TEST_IF(IsAndroid() || IsWindows());
+    ANGLE_SKIP_TEST_IF(IsPixel4() || IsPixel4XL() || IsWindows());
 
     // To aid in debugging, we want this window visible
     setWindowVisible(mOSWindow, true);