Looking at the RPM, it should drop a file in
$ rpm -qlp remi-release-5.rpm
If it's not there, and you're sure the RPM is installed, you should be able to remove the RPM with
rpm -e remi-release.
Some useful commands for you:-
rpm -ql remi-release - will list the files installed by the package
rpm -qi remi-release - will show the info for the package
You can also add the
-p option to the above, and specify a path to an RPM instead of a package name - that way you can see the info and files installed by the package without actually installing the package.