nb/intel/x4x: Drop commented-out statement

Time has proven this statement to be unnecessary. Uncommenting it would
not have any effect on the existing code, thus remove it completely.

Change-Id: Iff4cdd71435e4fd69d4f3284e9fb2830fdd5b173
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49389
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/northbridge/intel/x4x/raminit_ddr23.c

@@ -776,8 +776,6 @@ static void program_dll(struct sysinfo *s)
 					~rank2clken[r + i * 4]);
 			}
 		}
-
-		//reg8 = 0x00; // FIXME don't switch on all clocks anyway
 	} /* END EACH CHANNEL */
 
 	if (s->spd_type == DDR2) {