Erasing and merging a partition back
I'm looking to erase and remove/merge the space used by the windows partition back to the OSX portion. Below is the screenshot that shows the different disks.
I looked at the bootcamp assistant and the option to remove an existing windows partition was greyed out. Can anyone tell me how to get rid of the windows portion? (About 350g worth in that partition)
MacBook Pro with Retina display, macOS High Sierra (10.13.1)