Remove TARGET_USE_ION_COMPAT
https://github.com/VanirAOSP/kernel_lge_msm8974/blob/L5/include/linux/ion.h#L351
fixes the heap_mask naming issue.

Change-Id: Ia99f5051b422ba9cc4a36382beac3bbe2c8db24d
Signed-off-by: sudosurootdev <sudosurootdev@gmail.com>