SPRINGFIELD — Weeks after passing a measure to bump jurors’ pay, one lawmaker has introduced a bill to curtail that plan. Last month, then-Gov. Patrick J. Quinn signed legislation decreasing the number of jurors in every civil trial from 12 to six and increasing their compensation to a minimum $25 on the first day of service and $50 every day thereafter. The law is slated to take effect June 1. But the sponsor of that bill has filed a new measure to instead let counties determine their own juror fees …