Optimize/Update the new_project script (#4920)

* use pragma once in our templates

* template.h is present in both avr/ps2avrgb options so we moved it to base. In addition we now use pragma once

quantum/template/avr/template.h

@@ -1,38 +0,0 @@
-/* Copyright 2019 REPLACE_WITH_YOUR_NAME
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * 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 %KEYBOARD_UPPERCASE%_H
-#define %KEYBOARD_UPPERCASE%_H
-
-#include "quantum.h"
-
-/* This a shortcut to help you visually see your layout.
- *
- * The first section contains all of the arguments representing the physical
- * layout of the board and position of the keys.
- *
- * The second converts the arguments into a two-dimensional array which
- * represents the switch matrix.
- */
-#define LAYOUT( \
-    K00, K01, K02, \
-      K10,  K11   \
-) \
-{ \
-    { K00, K01,   K02 }, \
-    { K10, KC_NO, K11 }, \
-}
-
-#endif

quantum/template/base/template.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 %KEYBOARD_UPPERCASE%_H
+#pragma once
-#define %KEYBOARD_UPPERCASE%_H
 
 #include "quantum.h"
 
@@ -34,5 +33,3 @@
     { k00, k01,   k02 }, \
     { k10, KC_NO, k11 }, \
 }
-
-#endif