Remove bootloader listings from rules.mk (#14330)

keyboards/handwired/reddot/rules.mk

@@ -2,23 +2,7 @@
 MCU = atmega32u4
 
 # Bootloader selection
-#   Teensy       halfkay
-#   Pro Micro    caterina
-#   Atmel DFU    atmel-dfu
-#   LUFA DFU     lufa-dfu
-#   QMK DFU      qmk-dfu
-#   ATmega32A    bootloadHID
-#   ATmega328P   USBasp
-ifdef TEENSY2
-    BOOTLOADER = halfkay
-    OPT_DEFS += -DATREUS_TEENSY2
-    ATREUS_UPLOAD_COMMAND = teensy_loader_cli -w -mmcu=$(MCU) $(TARGET).hex
-else
-    BOOTLOADER = caterina
-    OPT_DEFS += -DATREUS_ASTAR
-    ATREUS_UPLOAD_COMMAND = while [ ! -r $(USB) ]; do sleep 1; done; \
-                            avrdude -p $(MCU) -c avr109 -U flash:w:$(TARGET).hex -P $(USB)
-endif
+BOOTLOADER = caterina
 
 # Build Options
 #   change yes to no to disable
@@ -36,9 +20,3 @@ BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by d
 UNICODE_ENABLE = no         # Unicode
 BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
 AUDIO_ENABLE = no           # Audio output on port C6
-
-# upload: build
-# 	$(ATREUS_UPLOAD_COMMAND)
-
-# for avr upload
-USB = /dev/cu.usbmodem1421