remove useless muldiv64()

muldiv64(a, 1, b) is like "a / b".

This patch is the result of coccinelle script
scripts/coccinelle/remove_muldiv64.cocci.
Signed-off-by: NLaurent Vivier <lvivier@redhat.com>
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

hw/usb/hcd-ohci.c

@@ -1474,7 +1474,7 @@ static uint32_t ohci_get_frame_remaining(OHCIState *ohci)
     if (tks >= usb_frame_time)
         return (ohci->frt << 31);
 
-    tks = muldiv64(tks, 1, usb_bit_time);
+    tks = tks / usb_bit_time;
     fr = (uint16_t)(ohci->fi - tks);
 
     return (ohci->frt << 31) | fr;