If your application do not uninstall from Program and Features, but you would like remove it from this list, then you can remove it manually from  registry of windows.

In the Search box, type Regedit, and then press enter, if your application is under Current User move in:


otherwise is under current Machine:

Here we are list of items named similar this :{88317BA6-D58F-4C9B-A967-15F43C99ADF4}

one of this items is your application, find it manually and remove it, reboot your pc, now you can delete All files from the original path