Hey, turn undead is a really usefull spell! And spike - really cool to start a fight with undead (see another thread with whining about liches).
Besides, if you personally don't use any spell it doesn't automatically mean that noone does (e. g. calm. create water, dispel evil - there are situations when having them is more useful than not having them. The calm spell affects should be reworked according to its description, actually - it potentially could become a really strong one).
Cure light and cure serious - you could use them for roleplay reasons

The only thing I'd agree with is kick - this skill really stands out of the line. Since we treat knights as noble warriors (canned meat, actually) with little martial artist skills (no dirt kicking, for example), then it looks logical to take the kick away from them. And give them something instead