heroc/Gallery3D: Remove DIRTY UGLY HACK from Gallery3D Overlay

The reload on orientation change DIRTY UGLY HACK is unnecessary
when using libGLES_qcom.so from the latest Dream/Sapphire
proprietaries.

This gives a dramatic speed increase when changing the phone
orientation while in Gallery3D.

Change-Id: Id3eb2710b22aa3fa701703450a33ce27bb6e4cf2