===== DeleteFile =====
//(Information and examples taken from the DroidScript documentation)//
==== Description ====
The **DeleteFile** method delete a file from internal or exernal file storage.
app.DeleteFile( fileName );
----
==== Example ====
function OnStart()
{
app.WriteFile( "/sdcard/wftest.txt", "Hello" );
app.DeleteFile( "/sdcard/wftest.txt" );
}