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/christmas_tree/V2017/V2017.h

@@ -1,6 +1,3 @@
-#ifndef V2017_H
-#define V2017_H
+#pragma once
 
 #include "christmas_tree.h"
-
-#endif

keyboards/christmas_tree/V2017/config.h

@@ -1,8 +1,5 @@
-#ifndef V2017_CONFIG_H
-#define V2017_CONFIG_H
+#pragma once
 
 #include "config_common.h"
 
 #define DEVICE_VER 0x2017
-
-#endif

keyboards/christmas_tree/christmas_tree.h

@@ -1,20 +1,14 @@
-#ifndef CHRISTMAS_TREE_H
-#define CHRISTMAS_TREE_H
+#pragma once
+
 #include "quantum.h"
 
-
 #define LAYOUT( \
-	k00, k01, k02, k03, k04, k05 \
-) \
-{ \
-	{ k00 }, \
-	{ k01 }, \
-	{ k02 }, \
-	{ k03 }, \
-	{ k04 }, \
-	{ k05 } \
+    k00, k10, k20, k30, k40, k50 \
+) { \
+    { k00 }, \
+    { k10 }, \
+    { k20 }, \
+    { k30 }, \
+    { k40 }, \
+    { k50 } \
 }
-
-
-
-#endif

keyboards/christmas_tree/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"
 
@@ -53,5 +52,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
-
-#endif