[PATCH] Remove NOOP code from fs/buffer.c::drop_buffers()

I noticed that fs/buffer.c::drop_buffers() contains some code that
AFAICS doesn't actually do anything other than waste cpu cycles so here
is patch to remove it...  The local variable was_uptodate is being
messed with but it is not being read anywhere so it seems entirely
pointless.

I assume this must be a remainder from old code which mucked around with
the page uptodateness but which has since been (re-)moved.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/buffer.c

@@ -2895,7 +2895,6 @@ drop_buffers(struct page *page, struct buffer_head **buffers_to_free)
 {
 	struct buffer_head *head = page_buffers(page);
 	struct buffer_head *bh;
-	int was_uptodate = 1;
 
 	bh = head;
 	do {
@@ -2903,8 +2902,6 @@ drop_buffers(struct page *page, struct buffer_head **buffers_to_free)
 			set_bit(AS_EIO, &page->mapping->flags);
 		if (buffer_busy(bh))
 			goto failed;
-		if (!buffer_uptodate(bh) && !buffer_req(bh))
-			was_uptodate = 0;
 		bh = bh->b_this_page;
 	} while (bh != head);