LANSING — House Speaker Joe Tate on Monday stripped an Oakland County Republican lawmaker of his office staff and budget and committee assignment for sharing a racist population conspiracy theory on social media. Tate’s office said GOP state Rep. Josh Schriver of Oxford will still be able to vote on the House floor but his service on committees and access to office resources is subject to the “discretion and pleasure” of Tate, D-Detroit. Under House rules, the speaker controls the allocation of staff and money for each representative’s individual office. The speaker’s punishment comes about a …