cleanup clueboard based on latest validation work

keyboards/clueboard/california/info.json

@@ -2,6 +2,7 @@
     "keyboard_name": "Clueboard California",
     "url": "",
     "maintainer": "skullydazed",
+    "processor": "STM32F303",
     "matrix_pins": {
         "direct": [
             ["A10", "A9"],
@@ -12,6 +13,13 @@
             [null, "B2"]
         ]
     },
+    "features": {
+        "mousekey": true,
+	"extrakey": true,
+	"console": true,
+	"command": true,
+	"audio": true
+    },
     "usb": {"pid": "0x23B0"},
     "layouts": {
         "LAYOUT": {

keyboards/clueboard/california/rules.mk

@@ -1,12 +1,2 @@
-# MCU name
-MCU = STM32F303
 BOARD = QMK_PROTON_C
-
-## Features
-MOUSEKEY_ENABLE = yes  # Mouse keys
-EXTRAKEY_ENABLE = yes  # Audio control and System control
-CONSOLE_ENABLE = yes   # Console for debug
-COMMAND_ENABLE = no    # Commands for debug and configuration
-NKRO_ENABLE = yes      # USB Nkey Rollover
-RGBLIGHT_ENABLE = no
-AUDIO_ENABLE = yes
+# This file intentionally left blank