** Two approaches for PHPSTORM 2018.3 Version **
A. Permanent removal or removal from hardware and Phpstorm IDE
Please visit the folder 'PhpstormProjects' and delete the project file manually. If you do so, you will see the folder disappear from Phpstorm explore window. This might be weird, but true.
B. Delete from the recent project panel Phpstorm 2018.3 (the folder will disappear after such a deletion, and creating with the same project name will restore the deletion from the recent project panel.)
1. Click File > Close project 2. From Recent projects, select project, press the fn(on normal keyboard - key between right Alt and Ctrl, not windows key)+Delete
Petre Sosa Aug 6 '13 at 20:36
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