Solving bootcamp error message to erase windows partition I have a Windows partition created with Bootcamp that I would like to delete but when I launch the Boot Camp Assistant I get the following error message:

 

I have a looked at several threads/articles surrounding this issue and I am uncertain if the proposed fixes from articles like this one are applicable in my situation and would like some advice on how I should precede. Running diskutil list gives the output below and diskutil cs list only returns No CoreStorage logical volume groups found if that is of any help.  

/dev/disk0 (internal):
#:                       TYPE NAME                    SIZE       
IDENTIFIER
0:      GUID_partition_scheme                         251.0 GB   disk0
1:                        EFI EFI                     314.6 MB   disk0s1
2:                 Apple_APFS Container disk1         180.0 GB   disk0s2
3:       Microsoft Basic Data BOOTCAMP                70.2 GB    disk0s3
4:           Windows Recovery                         489.7 MB   disk0s4

/dev/disk1 (synthesized):
#:                       TYPE NAME                    SIZE       
IDENTIFIER
0:      APFS Container Scheme -                      +180.0 GB   disk1
                             Physical Store disk0s2
1:                APFS Volume Macintosh HD            99.3 GB    disk1s1
2:                APFS Volume Preboot                 45.7 MB    disk1s2
3:                APFS Volume Recovery                517.0 MB   disk1s3
4:                APFS Volume VM                      1.1 GB     disk1s4


..
This is a very common question. Again, here is the commands you need to enter in a Terminal application window.

The next two commands will remove the disk0s4 partition and the disk0s3 partition labeled BOOTCAMP 

sudo diskutil eraseVolume free none disk0s4
sudo diskutil eraseVolume free none disk0s3


The next command return the free space back to the disk0s2 APFS container partition.

sudo diskutil apfs resizeContainer disk0s2 0


There may still be Windows boot files stored in the hidden EFI partition (disk0s1). These files can be removed by entering the commands given below.

sudo diskutil mount disk0s1
cd /Volumes/EFI/EFI
rm -r Boot
rm -r Microsoft
cd ~
diskutil unmount disk0s1