intel/northbridge/sandy: raminit code cleanup

Remove redundant call to dram_mrscommands().

Change-Id: I157915b4432093c556b538433e3337db1e9c525f
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/12891
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/northbridge/intel/sandybridge/raminit.c

@@ -3993,7 +3993,6 @@ void init_dram_ddr3(spd_raw_data * spds, int mobile, int min_tck,
 		/* MRS commands */
 		dram_mrscommands(&ctrl);
 		printk(BIOS_DEBUG, "Done MRS commands\n");
-		dram_mrscommands(&ctrl);
 
 		/* Prepare for memory training */
 		prepare_training(&ctrl);