severability.

   (1)    Except as provided in sub. (2), if any part of ss. 214.15 to 214.18 is held to be unconstitutional, then all of ss. 214.15 to 214.18 shall be invalid.

   (2)   If any part of ss. 214.15 to 214.18 is held to be unconstitutional with respect to a savings bank holding company, ss. 214.15 to 214.18 shall remain in effect with respect to in-state savings banks and regional institutions.