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/eco/rev1/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 REV1_CONFIG_H
-#define REV1_CONFIG_H
+#pragma once
 
 #include "../config.h"
 
@@ -26,5 +25,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROW_PINS { B1, B6, B2, B3 }
 #define MATRIX_COL_PINS { F4, F5, F6, F7, B5, B4, E6, D7, C6, D4, D0, D1, D2, D3 }
 #define UNUSED_PINS
-
-#endif