WebStorm - how to delete project's files from ..\User\.WebStorm6\config\tasks\ ?

After deleting project from "Recent Projects" and deleting project directory with File Explorer, there are still project's files in:

C:\Documents and Settings\User\.WebStorm6\config\tasks\MyProject.contexts.zip
C:\Documents and Settings\User\.WebStorm6\config\tasks\MyProject.tasks.zip

C:\Documents and Settings\User\.WebStorm6\config\componentVersions\moduleMyProject191b5343.xml

C:\Documents and Settings\User\.WebStorm6\system\conversion\MyProject15a99d8e.xml

Should i delete them with File Explorer, or there exists some WebStorm action ?

Thank you.