rtc: Clean drivers/rtc/Makefile

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/drivers/rtc/m41t60.c b/drivers/rtc/m41t60.c
index ef135ca..402a8c8 100644
--- a/drivers/rtc/m41t60.c
+++ b/drivers/rtc/m41t60.c
@@ -34,8 +34,7 @@
 #include <rtc.h>
 #include <i2c.h>
 
-#if defined(CONFIG_RTC_M41T60) && defined(CFG_I2C_RTC_ADDR) && \
-	defined(CONFIG_CMD_DATE)
+#if defined(CFG_I2C_RTC_ADDR) && defined(CONFIG_CMD_DATE)
 
 static unsigned bcd2bin(uchar n)
 {