Update marksard/leftover30 info.json (#10240)

* Keyboard: add treeadstone48

* rename layout defines

* Use of pragma once

* move common include code

* fixed info.json

* change keymap layout from kc to normal

* fix alpha revision keymap

* fixed info.json

* remove USE_Link_Time_Optimization

* Updated leftover30 info.json file

keyboards/marksard/leftover30/info.json

@@ -5,7 +5,7 @@
     "width": 11.5,
     "height": 4,
     "layouts": {
-        "LAYOUT": {
+        "LAYOUT_all": {
             "layout": [
                 {
                     "label": "Q",