media: pt3: remove redundant assignment to mask

Variable mask is being set to 0x80 and then set to this value again
in the following for-loop. Remove the extraneous first setting of mask.
Cleans up clang warning:

drivers/media/pci/pt3/pt3_i2c.c:88:2: warning: Value stored to 'mask'
is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/pci/pt3/pt3_i2c.c

@@ -85,7 +85,6 @@ static void put_byte_write(struct pt3_i2cbuf *cbuf, u8 val)
 {
 	u8 mask;
 
-	mask = 0x80;
 	for (mask = 0x80; mask > 0; mask >>= 1)
 		cmdbuf_add(cbuf, (val & mask) ? I_DATA_H_NOP : I_DATA_L_NOP);
 	cmdbuf_add(cbuf, I_DATA_H_ACK0);