In one of my earlier post I shared How to Install Windows on MacBook using Bootcamp and running Windows as a stand alone OS in Windows is better than running windows using parallels or Vmware. After some time using Windows as a stand alone OS on my MacBook pro, I have decided to remove Windows completely.
Here is a quick tutorial which will be helping you to remove Windows partition which you created using BootCamp.
Open BootCamp assistant:
Click on continue and click on create or remove a windows partition:
On the next screen click on restore:
Insert your password and you will get this screen: