floppy: remove redundant assignment to variable st

The variable st is being assigned a value that is never read and
it is being updated later with a new value. The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <[e-mail]>
Reviewed-by: Denis Efremov <[e-mail]>
Acked-by: Willy Tarreau <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jens Axboe <[e-mail]>

arch/x86/include/asm/floppy.h

···
 		int lcount;
 		char *lptr;
 
-		st = 1;
 		for (lcount = virtual_dma_count, lptr = virtual_dma_addr;
 		     lcount; lcount--, lptr++) {
 			st = inb(virtual_dma_port + FD_STATUS);