Revert "hwui: Update configuration for 2GB/1080p devices"

This reverts commit 47e2ba4a08d342397ae12a842cbd113699ea431f.
Revert "provide overrides for hwui memory limits for xxhdpi phones"

This reverts commit 69d074229c8f42909a1236859181494b17cf6269.
Revert "Add heap configuration for 1080p phones with 2048m"

This reverts commit 1f06a8b7b0654d4f2ed2c61bd08320e02865db83.
Revert "build/phone-xhdpi-1024-dalvik-heap.mk Revert AOSP heapgrowthlimit change from 64 to 96"

This reverts commit 5ab8d7a3bbf0db381de0caa10fbe5cf307b2d7fc.
Revert "SurfaceFlinger: Removal of NO_RGBX_8888 flag for OMAP3"

This reverts commit 3670c4db0c62e92a135b39820cda34eb4ef1b535.