Revert "Add optimized version of memcpy for Cortex A9"

This reverts commit be5f8d91caba8432e0e7699a8a3dc9123185c6d0.
bionic: Make use of new memcpy, tweak settings

The new memcpy() is slightly faster than the cortex-strings version,
and fixes the Galaxy Nexus camera issue.

Change-Id: Ie65d14992a399e9bc2709a3d710d52b5b1a62e87
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>

Conflicts:

	libc/Android.mk