remove app2unit in launcher settings

Assets/settings-default.json

@@ -235,7 +235,6 @@
     "clipboardWatchImageCommand": "wl-paste --type image --watch cliphist store",
     "position": "center",
     "pinnedApps": [],
-    "useApp2Unit": false,
     "sortByMostUsed": true,
     "terminalCommand": "alacritty -e",
     "customLaunchPrefixEnabled": false,

Assets/settings-search-index.json

@@ -1308,15 +1308,6 @@
       "Settings.data.appLauncher.enableClipboardHistory"
     ]
   },
-  {
-    "labelKey": "panels.launcher.settings-use-app2unit-label",
-    "descriptionKey": "panels.launcher.settings-use-app2unit-description",
-    "widget": "NToggle",
-    "tab": 8,
-    "tabLabel": "panels.launcher.title",
-    "subTab": 2,
-    "subTabLabel": "common.execute"
-  },
   {
     "labelKey": "panels.launcher.settings-terminal-command-label",
     "descriptionKey": "panels.launcher.settings-terminal-command-description",