You can disable workflows on your projects by following these instructions:
Step 1
There are two ways you can access the project settings page.
Option 1:
On the Organization’s page, click on the […] icon on the top right corner of the project, then select “Settings.”
Option 2:
Within the project page, click on the ellipsis (…) icon towards the top-right corner of the screen, then select “Settings.”
Step 2
On the Settings page, click on the Disable workflow button.
Confirm that you want to disable the workflow by clicking the OK button.