Change include guards in quantum/ to pragma once (#11239)

quantum/led_tables.h

@@ -13,8 +13,7 @@ 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 LED_TABLES_H
-#define LED_TABLES_H
+#pragma once
 
 #include "progmem.h"
 #include <stdint.h>
@@ -22,5 +21,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef USE_CIE1931_CURVE
 extern const uint8_t CIE1931_CURVE[] PROGMEM;
 #endif
-
-#endif