Remove the Projects option in editing of Recent Content Widget

Hi Developers,

I want to remove the project option from the Recent content widget option. we have disable the projects even though it is appearing.

We don't want this any more.Please see the following screen shot for the reference.

For producing this

1)Go for any group  --->  Manage ---> Overview Page ---> Content ---> Recent Content Drag and drop the widget, Then after click on the edit widget option

Is there any property to remove project option, i tried to hide by using themes but is not possible by using the themes.

Please any one can help me regarding this issue...

Regards,

Gangadhar.