cleanup clueboard based on latest validation work

keyboards/clueboard/17/info.json

@@ -5,6 +5,7 @@
   "height": 5,
   "width": 4,
   "diode_direction": "COL2ROW",
+  "processor": "atmega32u4",
   "features": {
     "backlight": true,
     "bootmagic": false,
@@ -25,11 +26,11 @@
     "animations": {
       "all": true
     },
-    "brightness_steps": "17",
-    "hue_steps": "10",
-    "led_count": "4",
+    "brightness_steps": 17,
+    "hue_steps": 10,
+    "led_count": 4,
     "pin": "F6",
-    "saturation_steps": "17"
+    "saturation_steps": 17
   },
   "url": "",
   "usb": {

keyboards/clueboard/17/rules.mk

@@ -1,15 +1,2 @@
-# MCU name
-MCU = atmega32u4
-
-# Bootloader selection
-#   Teensy       halfkay
-#   Pro Micro    caterina
-#   Atmel DFU    atmel-dfu
-#   LUFA DFU     lufa-dfu
-#   QMK DFU      qmk-dfu
-#   ATmega32A    bootloadHID
-#   ATmega328P   USBasp
-BOOTLOADER = atmel-dfu
-
 # Build Options
 BACKLIGHT_DRIVER = custom