How do I Erase all content and settings on my MacBook using Apple ID
How do I Erase all content and settings on my MacBook Pro using Apple ID
Mac Pro, OS X El Capitan (10.11.3)
Reformat the HDD/SSD using Disk Utility>Erase.
You can use the recovery partition or the OSX disks that came with your MBP (depending upon the model/year).
Ciao.