remove this as it's now set globally via CPU variant flags

Change-Id: I3a3e3affcef6dca7b0265430f8def9ca0925936f
remove graphite experimental flags: not used

Change-Id: I2ea48da607925c6be8cf00454eb4e98795c24505
use neon MEMCPY for N7 boards

Change-Id: Idd0300c0d033da908723064fa3f08a9f772ce51a
Signed-off-by: DHO <DHO@dho.im>