More keyboard rules.mk cleanups (#16044)

* More keyboard rules.mk cleanups

* Found a couple more

keyboards/handwired/ortho_brass/rules.mk

@@ -1,7 +1,7 @@
 # MCU name
 MCU = atmega32u4
 
-# Bootloader
+# Bootloader selection
 BOOTLOADER = qmk-dfu
 
 # Build Options
@@ -10,13 +10,10 @@ MOUSEKEY_ENABLE = no        # Mouse keys
 EXTRAKEY_ENABLE = yes       # Audio control and System control
 CONSOLE_ENABLE = no         # Console for debug
 COMMAND_ENABLE = no         # Commands for debug and configuration
-NKRO_ENABLE = yes           # N-key Rollover
+NKRO_ENABLE = yes           # Enable N-key Rollover
 BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
 RGBLIGHT_ENABLE = no        # Enable RGB underlight.
 
-# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
-
 LAYOUTS = ortho_4x12
 
 RGBLIGHT_SUPPORTED = no