Change keyboard level include guards to pragma once (#14248)

* Change keyboard level include guards to `pragma once`

And clean up a lot of layout macros

* Oops

* Remove dangling endif

keyboards/handwired/gamenum/config.h

@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_H
-#define CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
@@ -151,5 +150,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_ONESHOT
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
-
-#endif

keyboards/handwired/gamenum/gamenum.h

@@ -1,21 +1,19 @@
-#ifndef GAMENUM_H
-#define GAMENUM_H
+#pragma once
 
 #include "quantum.h"
 
-#define LAYOUT( \
-	k00, k01, k02, k03, \
-	k10, k11, k12, k13, \
-	k20, k21, k22,      \
-	k30, k31, k32,      \
-	     k41, k42, k43  \
-) \
-{ \
-	{ k00,   k01, k02, k03   }, \
-	{ k10,   k11, k12, k13   }, \
-	{ k20,   k21, k22, KC_NO }, \
-	{ k30,   k31, k32, KC_NO }, \
-	{ KC_NO, k41, k42, k43   }  \
-}
+#define XXX KC_NO
 
-#endif
+#define LAYOUT( \
+    k00, k01, k02, k03, \
+    k10, k11, k12, k13, \
+    k20, k21, k22, \
+    k30, k31, k32, \
+         k41, k42, k43 \
+) { \
+    { k00, k01, k02, k03 }, \
+    { k10, k11, k12, k13 }, \
+    { k20, k21, k22, XXX }, \
+    { k30, k31, k32, XXX }, \
+    { XXX, k41, k42, k43 } \
+}