zr36016: remove some unused tables

Gcc 6.1 warns about some unused tables:

drivers/media/pci/zoran/zr36016.c:251:18: warning: 'zr016_yoff' defined but not used [-Wunused-const-variable=]
 static const int zr016_yoff[] = { 8, 9, 7 };
                  ^~~~~~~~~~
drivers/media/pci/zoran/zr36016.c:250:18: warning: 'zr016_xoff' defined but not used [-Wunused-const-variable=]
 static const int zr016_xoff[] = { 20, 20, 20 };
                  ^~~~~~~~~~

Those tables aren't used anywere. So, remove them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/pci/zoran/zr36016.c

@@ -246,10 +246,6 @@ static int zr36016_pushit (struct zr36016 *ptr,
    //TODO//
    ========================================================================= */
 
-// needed offset values          PAL NTSC SECAM
-static const int zr016_xoff[] = { 20, 20, 20 };
-static const int zr016_yoff[] = { 8, 9, 7 };
-
 static void
 zr36016_init (struct zr36016 *ptr)
 {