Remove LZ4 support

Not really needed.

This reverts commit 90431ee83569c1175b772268743e58793ddc6233.

Conflicts:
	arch/arm/configs/cm_fusion3_yuga_defconfig
	lib/lz4/lz4_decompress.c

Change-Id: Iea13b5471212980b9d7ede8121696646eb6096c0