[Keyboard] Convert Maxr1998/Phoebe to use info.json where possible (#16309)

keyboards/maxr1998/phoebe/rules.mk

@@ -1,20 +0,0 @@
-# MCU name
-MCU = atmega32u4
-
-# Bootloader selection
-BOOTLOADER = atmel-dfu
-
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no       # Mouse keys
-EXTRAKEY_ENABLE = no       # Audio control and System control
-CONSOLE_ENABLE = yes       # Console for debug
-COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
-AUDIO_ENABLE = no          # Audio output
-RGBLIGHT_ENABLE = yes      # Enable WS2812 RGB underlight.
-KEY_LOCK_ENABLE = yes
-LEADER_ENABLE = yes        # Enable leader key