rgbkb/zen - Resolve CONVERT_TO_PROTON_C warnings (#17619)

keyboards/rgbkb/zen/rev1/config.h

@@ -17,6 +17,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #pragma once
 
+#include "config_common.h"
+
 /* USB Device descriptor parameter */
 #define VENDOR_ID       0xFEED
 #define PRODUCT_ID      0x3060

keyboards/rgbkb/zen/rev1/rev1.h

@@ -1,17 +1,7 @@
 #pragma once
 
-#include "zen.h"
-
 #include "quantum.h"
 
-#ifdef USE_I2C
-#include <stddef.h>
-#ifdef __AVR__
-    #include <avr/io.h>
-    #include <avr/interrupt.h>
-#endif
-#endif
-
 #define LAYOUT( \
     k00, k01, k02, k03, k04, k05,               k55, k54, k53, k52, k51, k50, \
     k10, k11, k12, k13, k14, k15,               k65, k64, k63, k62, k61, k60, \