Antivirus free edition

My 2014 Frree Trial has expired and i downloaed AVG AntiVirus Free Edition 2015 (Zen)  I keep getting a pop-up saying i have no threats, but 2015 edtion says i am not fully protected for my computer part.  i want to UNISTALL the 2015 version, but it is nowhere in my programs, and it shows on my desk top.  PLEASE HELP ME UNINSTALL the 2015 VERSION.  My 2014 AVG TUNEUP is still available
ALLI WANT TO DO IS UNINSTALL 2015  BUT I CAN NOT FIND IT IN MY PROGRAMS
PLEASE HELP ME ASAP     

Hello Heidi,
I apologize for the inconvenience you experienced in this case.
I request you to please use AVG Remover tool to uninstall AVG program installed on your system.
Please use the below link to download AVG Remover tool:
http://aa-download.avg.com/filedir/util/AVG_Remover.exe
Please feel free to get back to us for further assistance.
Thank you.