Close all programs. This will keep the computer from slowing down or freezing when removing the RPM package. It allows the computer to focus on this one task and allow it to finish quickly and accurately. This is a technique you should use whenever removing or installing any programs.
Open a terminal window. Type rpm -e *package name*. This is the appropriate command to use to remove your RPM package. If you are having trouble removing it, consider if it has dependencies or will affect another program by being removed from the hard drive.
Use a trouble shooting site for Linux to solve any possible problems you may have removing your RPM package. There are a number of good Linux trouble shooting sites