staging: r8188eu: on_action_spct does nothing

One of the entries in OnAction_tbl refers to on_action_spct. This function
reads some information but it performs no action. Remove on_action_spct
and its entry in OnAction_tbl.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220421200805.192083-3-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>