Removing of Acrobat Reader api files

I am using Adobe Acrobat reader 11.0 in my PC, I am clearing the unwanted file and backup files from the system, I found few Acrobat Reader api files inside the Reader folder, I am not aware of what api files is, can anyone make me understand what is api files, will removing of api files affect the Acrobat Reader in negative mode, Please guide me. Thanks
