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/comet46/comet46.h

@@ -1,22 +1,21 @@
-#ifndef COMET46_H
-#define COMET46_H
+#pragma once
 
 #include "quantum.h"
 
+#define XXX KC_NO
+
 // This a shortcut to help you visually see your layout.
 // The first section contains all of the arguements
 // The second converts the arguments into a two-dimensional array
 #define LAYOUT( \
-  k00, k01, k02, k03, k04, k05,                k06, k07, k08, k09, k10, k11,\
-  k12, k13, k14, k15, k16, k17, k18,      k19, k20, k21, k22, k23, k24, k25,\
-  k26, k27, k28, k29, k31, k32, k33,      k34, k35, k36, k37, k38, k41, k42,\
-                      k43, k44, k45,      k46, k47, k48     \
-) \
-{ \
-	{ k13,   k01, k26, k12, k00,      k11, k25, k42, k10, k24}, \
-	{ k03,   k28, k14, k02, k27,      k41, k09, k23, k38, k08}, \
-	{ k31,   k16, k04, k29, k15,      k22, k37, k07, k21, k36}, \
-	{ KC_NO, k32, k17, k05, k43,      k48, k06, k20, k35, KC_NO },  \
-	{ KC_NO, k45, k33, k18, k44,      k47, k19, k34, k46, KC_NO }, \
+    k04, k01, k13, k10, k22, k33,                k36, k27, k19, k16, k08, k05, \
+    k03, k00, k12, k24, k21, k32, k43,      k46, k37, k28, k25, k17, k09, k06, \
+    k02, k14, k11, k23, k20, k31, k42,      k47, k38, k29, k26, k18, k15, k07, \
+                        k34, k44, k41,      k48, k45, k35 \
+) { \
+    { k00, k01, k02, k03, k04, k05, k06, k07, k08, k09 }, \
+    { k10, k11, k12, k13, k14, k15, k16, k17, k18, k19 }, \
+    { k20, k21, k22, k23, k24, k25, k26, k27, k28, k29 }, \
+    { XXX, k31, k32, k33, k34, k35, k36, k37, k38, XXX }, \
+    { XXX, k41, k42, k43, k44, k45, k46, k47, k48, XXX } \
 }
-#endif

keyboards/comet46/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"
 
@@ -72,5 +71,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     UCSR1B = _BV(TXEN1) | _BV(RXEN1); \
     /* 8-bit data */                  \
     UCSR1C = _BV(UCSZ11) | _BV(UCSZ10);
-
-#endif

keyboards/comet46/i2c.h

@@ -1,5 +1,4 @@
-#ifndef I2C_H
-#define I2C_H
+#pragma once
 
 #include <stdint.h>
 
@@ -45,5 +44,3 @@ extern unsigned char i2c_readNak(void);
 extern unsigned char i2c_read(unsigned char ack);
 
 #define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak();
-
-#endif