title: how to Remove the space for showing Application name
body: <p>I developed an application. I would like to remove space that is used
   for showing application name on top of my application UI. (The Title Bar)</p>
  
  <p>I set Application label as null In manifest File But it will not remove the space for showing Application name</p>
  
  <p>Please tell me what is the correct or possible way to do that</p>
  
  <p>Thanks in advance</p>