There seems to be some hidden leftovers that are causing background notifications to continue even after uninstalling gotomeetings.
Here is what you want to do....
open up terminal
"cd ~/Library/LaunchAgents" enter
"ls" enter
Here you should see a couple items named something like com.logmein.gotomeeting... blablabla..
you want to remove both of them by typeing "rm ReplaceWithNameOfTheFile.plist"
example..
"rm com.logmein.GoToMeeting.G2MUpdate.plist" enter
"rm com.logmein.GoToMeeting.G2MAIRUploader.plist" enter
hope this help..