rgbkb/zen - Resolve CONVERT_TO_PROTON_C warnings (#17619)

keyboards/rgbkb/zen/rev2/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      0x3061
@@ -28,13 +30,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // Rows are doubled-up
 
 // wiring of each half
-#ifdef CONVERT_TO_PROTON_C
-  #define MATRIX_ROWS 5
-  #define MATRIX_COLS 7
-#else
-  #define MATRIX_ROWS 10
-  #define MATRIX_COLS 7
-#endif
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 7
 
 // Proton-C does pin conversion
 #define MATRIX_ROW_PINS { C6, E6, B5, D7, B4 }