One of the great features in photoshop is its "content-aware" tool. It is a really good timesaver when you want to remove an object from your picture. This works just like the "clone-stamp" tool. It takes pixels from another place on your picture and makes it look like as if it is suppose to be like that. With the thing you removed.
Using this tool is very easy - just a few clicks and your on your way!
First you need a picture to edit.
Then make a selection around the object you want to have removed. In this case i used the lasso tool to make a selection around the menu bar in the upper left corner.
Then go to Edit->Fill and do as in the picture below:
Then press OK and your object should be gone as in the following picture:
Note i also removed the object in the lower left corner in the grass. And it is hard to see that there actually was something in the place before.