I don’t work on Fedora, but you could try something like this:
rpm -e root5
Several examples how to install ROOT:
[root.cern.ch/phpBB3/viewtopic.p … 803#p81803](Error compiling Root from source on Ubuntu 14.04
[root.cern.ch/phpBB3/viewtopic.p … 797#p78797](Trouble Installing
[root.cern.ch/phpBB3/viewtopic.p … 839#p78839](Problem with png of divided canvas in 5-34/19 on Mac
[root.cern.ch/phpBB3/viewtopic.p … 528#p63528](Release 5.32.03 on Ubuntu 12.04