You can't delete certain channels if they come in a package. Unfortunately that is not possible. You have a choice of the packages they offer you and those packages included the channel you may not want but can not be removed and get a discount.
yeah what meow and gd said, you can not delete channels from your package, as the package was built that way based on many factors such as carriage agreements, marketing, engineering, and channel popularity.
there is talks up hi in the CRTC about making an a-la cart system available for Canadians, so hopefully rogers jumps on the band wagon soon. this will allow u to pretty much build your own package