[PATCH] remove redundant vm_flags clearing from madvise.c

This patch removes redundant VM_ClearReadHint from mm/madvice.c which was
left there by Prasanna's patch.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>