Silence vmd rtc_update_rega non-32KHz timebase spam

[Brian Conway]

Per https://marc.info/?l=openbsd-misc&m=159113575425726 , mlarkin@
suggested someone can remove it. It's still pretty spammy at the
current time for me.

Brian Conway
Software Engineer, Owner
RCE Software, LLC

diff --git usr.sbin/vmd/mc146818.c usr.sbin/vmd/mc146818.c
index e3599c68504..17cf21221e5 100644
--- usr.sbin/vmd/mc146818.c
+++ usr.sbin/vmd/mc146818.c
@@ -236,10 +236,6 @@ rtc_reschedule_per(void)
 static void
 rtc_update_rega(uint32_t data)
 {
-    if ((data & MC_DIVIDER_MASK) != MC_BASE_32_KHz)
-        log_warnx("%s: set non-32KHz timebase not supported",
-            __func__);
-
     rtc.regs[MC_REGA] = data;
     if ((rtc.regs[MC_REGA] ^ data) & 0x0f)
         vm_pipe_send(&dev_pipe, MC146818_RESCHEDULE_PER);