Style: Cleanup single-line blocks, semicolons, dead code

Remove currently unused implementation of TextureBasisU, could be re-added
later on if needed and ported.

platform/javascript/javascript_singleton.cpp

@@ -29,6 +29,7 @@
 /*************************************************************************/
 
 #include "api/javascript_singleton.h"
+
 #include "emscripten.h"
 #include "os_javascript.h"