Clone stamp tool is a very useful tool of photoshop. We can easily remove objects using it. Here is a tutorial to remove unwanted objects from a photo using Clone stamp tool

Open the original photo in photoshop

Select the clone stamp tool

On the option bar select the brush size and type we will like to use

Move the cursor upon the area we want to clone and replace by

Hold down ALT key and click mouse

release mouse and put mouse upon the object we want to remove

click and drag click and drag

repeat the process until all unwanted objects are removed

Done !!

Credit: http://iit.bloomu.edu