Remove graphics.c; add line to recovery.rc.

The custom graphics.c was not much different from (actually,
functionally identical to) bootable/recovery/minui/graphics.c. Hence,
just specify the appropriate C flag and use that and try.

Change-Id: I33877df1bb61ecbf8b1dd3855997af424fd4dc89
Signed-off-by: angelsl <hidingfromhidden@gmail.com>