Migrate build target markers to keyboard.json - R (#23542)

keyboards/rmi_kb/mona/v1_1/keyboard.json

@@ -8,6 +8,12 @@
         "pid": "0x404B",
         "device_version": "0.1.1"
     },
+    "features": {
+        "bootmagic": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": false
+    },
     "matrix_pins": {
         "cols": ["D0", "D3", "D2", "F4", "F5", "F6", "F7", "C7", "C6", "B6", "B5", "B4", "D7", "D6", "D4"],
         "rows": ["D1", "D5", "B7", "F0", "F1"]

keyboards/rmi_kb/mona/v1_1/rules.mk

@@ -1,12 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = yes       # 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 = no            # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output