Rogue package

[Ashley M. Kirchner]

    I have an FC10 system that has kernel-2.6.27.9-159.fc10.i586 
installed, yet yum nor rpm seem to think it is.  It's in grub.conf, 
there are files in /usr/src/kernels/ pertaining to it ... but I can't 
remove it.

    The system is running kernel-2.6.27.19-170.2.35.fc10.i686 so I don't 
need the other one.  How do I go about instructing yum that it's 
installed and to remove it, if it tells me the package isn't installed?