Remove the main from the wasm example

examples/projects/browser/led/src/main.c

@@ -1,16 +1 @@
-#include "luos_engine.h"
-// #include "ws_network.h"
-#include "led.h"
-
-int main(void)
-{
-    Luos_Init();
-    // Ws_Init();
-    Led_Init();
-    while (1)
-    {
-        Luos_Loop();
-        // Ws_Loop();
-        Led_Loop();
-    }
-}
+// This file is only used for compilation purpose, you can use the compiled packages using JS instead.