Revert "V4L/DVB (8904): cx88: add missing unlock_kernel"

This reverts commit 135aedc38e812b922aa56096f36a3d72ffbcf2fb, as
requested by Hans Verkuil.

It was a patch for 2.6.28 where the BKL was pushed down from v4l core to
the drivers, not for 2.6.27!

Requested-by: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-of-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/media/video/cx88/cx88-blackbird.c b/drivers/media/video/cx88/cx88-blackbird.c
index 6b92206..9a1374a 100644
--- a/drivers/media/video/cx88/cx88-blackbird.c
+++ b/drivers/media/video/cx88/cx88-blackbird.c
@@ -1070,7 +1070,6 @@
 		err = drv->request_acquire(drv);
 		if(err != 0) {
 			dprintk(1,"%s: Unable to acquire hardware, %d\n", __func__, err);
-			unlock_kernel();
 			return err;
 		}
 	}