[media] bttv-driver: remove an uneeded semicolon

We don't use semicolons after curly braces in the middle of the
code.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/pci/bt8xx/bttv-driver.c

@@ -3856,7 +3856,7 @@ static irqreturn_t bttv_irq(int irq, void *dev_id)
 
 				btwrite(btread(BT848_INT_MASK) & (-1 ^ BT848_INT_GPINT),
 						BT848_INT_MASK);
-			};
+			}
 
 			bttv_print_irqbits(stat,astat);