cpu/ rtc/ include/: Remove lingering references to CFG_CMD_* symbols.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/rtc/mpc5xxx.c b/rtc/mpc5xxx.c
index 72f3111..216386a 100644
--- a/rtc/mpc5xxx.c
+++ b/rtc/mpc5xxx.c
@@ -137,4 +137,4 @@
 	return;	/* nothing to do */
 }
 
-#endif	/* CONFIG_RTC_MPC5200 && CFG_CMD_DATE */
+#endif