cleanup clueboard based on latest validation work

keyboards/clueboard/66_hotswap/gen1/info.json

@@ -4,7 +4,8 @@
   "maintainer": "skullydazed",
   "height": 5,
   "width": 16.5,
-  "debounce": "5",
+  "debounce": 5,
+  "processor": "STM32F303",
   "diode_direction": "COL2ROW",
   "features": {
     "audio": true,
@@ -12,13 +13,16 @@
     "command": true,
     "console": true,
     "extrakey": true,
-    "led_matrix": "IS31FL3731",
+    "led_matrix": true,
     "mousekey": true,
     "nkro": true
   },
+  "led_matrix": {
+    "driver": "IS31FL3731"
+  },
   "matrix_pins": {
-    "cols": ["B10", " B2", " B1", " B0", " A7", " B4", " B3", " B7"],
-    "rows": ["B11", " A6", " A3", " A2", " A1", " B5", " B6", " C15", " C14", " C13"]
+    "cols": ["B10", "B2", "B1", "B0", "A7", "B4", "B3", "B7"],
+    "rows": ["B11", "A6", "A3", "A2", "A1", "B5", "B6", "C15", "C14", "C13"]
   },
   "usb": {
     "device_ver": "0x0001",

keyboards/clueboard/66_hotswap/gen1/rules.mk

@@ -1,5 +1,3 @@
-# MCU name
-MCU = STM32F303
 BOARD = QMK_PROTON_C
 LED_MATRIX_DRIVER = IS31FL3731