Reflets

The ability to remove a reflection from a photo will depend entirely on the photo (and the reflection).  However, there are various techniques that can be used to remove the reflection.  In the following example, I have made several different and loose selections around portions of the reflection, using the Lasso Tool.

Then, for each selection, I used the Edit>Fill Selection . . . menu option and chose Content-Aware to fill the selection:

Selecting smaller portions of the reflection and filling them separately may get better results than either making a larger contiguous selection or filling multiple smaller selections with one fill command.  Here is what can be achieved using this method:

But this only worked well because the fill content was a blue sky and a straight pole.  It will all depend on the photo as to what result can be achieved.

Other tools will also help with the edit, including the Healing Brush and the Clone Stamp tool.  Essentially, all Elements can do is replace one part of the photo with another.

If you need further help, I suggest you post a representative photo and we can make additional suggestions.

You may also want to take a look at this discussion about removing a color cast from a window.