Tidy 40percentclub boards (#4403)

* Remove unnecessary re-definitions for XXXXXXX and _______

* Update 6lit to use KC_NO in layout macros

* Update rules.mk to follow current template

* Remove use of deprecated function action_get_macro - unused and contents were from old template

* Remove use of deprecated function action_get_macro - all code was commented out

* Remove use of deprecated function action_get_macro - convert macro to use process_record_user

* Convert keymap to consistent use of _______

* fix use of old style header guards

* Swap KC_NO for XXXXXXX macro since the swap to the macro for KC_TRANS

* Resolve use of ?= in rules.mk files

* Remove duplication of rules.mk and config.h in gherkin mjt keymap

* Remove unnecessary #includes

* Align layout macros so foobar can use gherkin keymaps

* Align 6lit layout macros with foobar

* Remove ifndef QUANTUM_DIR from keymaps

keyboards/40percentclub/ut47/ut47.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 UT47_H
-#define UT47_H
+#pragma once
 
 #include "quantum.h"
 
@@ -45,5 +44,3 @@
   )
 
 #define LAYOUT_kc_ut47 LAYOUT_kc
-
-#endif