Photoshop CS5 Remove Object In Picture (One Click)

With Spot Healing Brush Tool, and set Content-Ware, You can do this just one click:

Folow this way
Looks, This the original image:

Select Spot Healing Brush Tool:

 

Select "Content-ware":

Begin fill area that you will remove with Spot Healing Brush:

 And you will see like this:

   

 And you can do like this too: