hookDestroy
Destroys a #GHook, given its ID.
Return
true if the #GHook was found in the #GHookList and destroyed
Parameters
hookList
a #GHookList
hookId
a hook ID
Destroys a #GHook, given its ID.
true if the #GHook was found in the #GHookList and destroyed
a #GHookList
a hook ID