Configure boards to use development_board - T (#25294)

keyboards/takashicompany/spreadwriter/keyboard.json

@@ -2,7 +2,7 @@
     "manufacturer": "takashicompany",
     "keyboard_name": "Spreadwriter",
     "maintainer": "takashicompany",
-    "bootloader": "caterina",
+    "development_board": "promicro",
     "diode_direction": "COL2ROW",
     "features": {
         "bootmagic": true,
@@ -16,7 +16,6 @@
         "cols": ["D4", "C6", "D7", "E6", "B4", "B5", "D2"],
         "rows": ["F4", "F5", "F6", "F7", "B1", "B3", "B2", "B6"]
     },
-    "processor": "atmega32u4",
     "url": "https://github.com/takashicompany/spreadwriter",
     "usb": {
         "device_version": "1.0.0",