title: Android & cut (remove) shape from bitmap
body: <p>How do you cut (remove) a section from a bitmap???
  I want that section/shape to be removed.. leave transparent in place of section..
  Say shape is cercle or square..</p>
  
  <p><img src="https://i.stack.imgur.com/yxvXJ.gif" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/sHoGy.gif" alt="enter image description here"></p>