[SPARC]: Remvoe APM_RTC_IS_GMT from config.

I can't see any effect of this option outside the i386-specific APM code.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>