Migrate build target markers to keyboard.json - 0AB (#23488)

keyboards/3w6/rev1/keyboard.json

@@ -1,6 +1,14 @@
 {
     "usb": {
-        "device_version": "0.0.1"
+        "device_version": "0.0.1",
+        "no_startup_check": true
+    },
+    "features": {
+        "bootmagic": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": false,
+        "unicode": true
     },
     "processor": "atmega32u4",
     "bootloader": "atmel-dfu",

keyboards/3w6/rev1/rules.mk

@@ -1,19 +1,3 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # 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
-UNICODE_ENABLE = yes
 CUSTOM_MATRIX = lite
-NO_USB_STARTUP_CHECK = yes
-LTO_ENABLE = no
-
 SRC += matrix.c
 I2C_DRIVER_REQUIRED = yes

keyboards/3w6/rev2/keyboard.json

@@ -1,6 +1,14 @@
 {
     "usb": {
-        "device_version": "0.0.2"
+        "device_version": "0.0.2",
+        "no_startup_check": true
+    },
+    "features": {
+        "bootmagic": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": false,
+        "unicode": true
     },
     "processor": "atmega32u4",
     "bootloader": "atmel-dfu",

keyboards/3w6/rev2/rules.mk

@@ -1,19 +1,3 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # 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
-UNICODE_ENABLE = yes
 CUSTOM_MATRIX = lite
-NO_USB_STARTUP_CHECK = yes
-LTO_ENABLE = no
-
 SRC += matrix.c
 I2C_DRIVER_REQUIRED = yes