Remove unused member variable CNegateMagic::fSize
Fix negate magic spell effect not rotating

It was actually rotating, just veeeeery slowly.

This commit also adds a pulsating scale to the effect.
Remove unused CDispellField spell effect
Remove unused CTelekinesis spell effect
Remove unused CPortal spell effect
Remove unused CMassParalyse spell effect
Remove unused CParalyse spell effect
Remove unused CMassIncinerate spell effect
Remove unused CIncinerate spell effect
Fix trap spell effect not rotating

It was actually rotating, just veeeeery slowly.

This commit also adds a small but fast pulsating scale to the effect.
Remove unused CDisarmTrap spell effect

The spell effect object *was* created, but never updated or rendered.

Also, the disable trap spell is instantaneous.
Bind the "Negate Magic" spell and its effects to the spell target.