Clean up some remaining rules.mk bootloader stuff (#8165)

keyboards/handwired/dactyl_left/rules.mk

@@ -1,17 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = halfkay
 
-
 # Build Options
 #   change yes to no to disable
 #

keyboards/handwired/minorca/keymaps/ridingqwerty/rules.mk

@@ -1,10 +1,6 @@
-MCU = atmega32u4
-BOOTLOADER = halfkay
-
 # Build Options
 #   change to "no" to disable the options, or define them in the Makefile in 
 #   the appropriate keymap folder that will get included automatically
 #
 BOOTMAGIC_ENABLE = lite     # Virtual DIP switch configuration
-UNICODE_ENABLE = no         # Unicode
 UNICODEMAP_ENABLE = yes     # Unicode Map

keyboards/handwired/owlet60/rules.mk

@@ -1,29 +1,16 @@
-SRC += matrix.c
-
 # MCU name
 MCU = atmega32u4
 
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-
-# If you don't know the bootloader type, then you can specify the
-# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
-#   Teensy halfKay      512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-# OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
-
 # Build Options
 #   change yes to no to disable
 #
@@ -45,4 +32,6 @@ AUDIO_ENABLE = no           # Audio output on port C6
 FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
 HD44780_ENABLE = no 		# Enable support for HD44780 based LCDs (+400)
 CUSTOM_MATRIX = yes
-OLED_DRIVER_ENABLE = no
+OLED_DRIVER_ENABLE = no
+
+SRC += matrix.c