iconlaunch: Ensure 'oneClickExit' is the default, and remove useless btn:line

apps/iconlaunch/ChangeLog

@@ -25,3 +25,4 @@
 0.18: Better performance
 0.19: Remove 'jit' keyword as 'for(..of..)' is not supported (fix #2937)
 0.20: Use '28' font if installed (2v26+) and put it inside a rounded rect in the current theme
+      Ensure 'oneClickExit' is the default

apps/iconlaunch/app.js

@@ -4,7 +4,7 @@
     showClocks: true,
     fullscreen: false,
     direct: false,
-    oneClickExit: false,
+    oneClickExit: true,
     swipeExit: false,
     timeOut:"Off"
   }, s.readJSON("iconlaunch.json", true) || {});
@@ -137,8 +137,7 @@
         require("widget_utils").show();
       }
       if(idWatch) clearWatch(idWatch);
-    },
-    btn:Bangle.showClock
+    }
   };
 
   //work both the fullscreen and the oneClickExit

apps/iconlaunch/settings.js

@@ -5,7 +5,7 @@
     showClocks: true,
     fullscreen: false,
     direct: false,
-    oneClickExit: false,
+    oneClickExit: true,
     swipeExit: false,
     timeOut:"Off"
   }, s.readJSON("iconlaunch.json", true) || {});