SPRINGFIELD — After leaving the House Republican caucus, a conservative lawmaker running for governor is reviving an issue to peel off voter support for the incumbent Republican from the right.Nearly a year after Gov. Bruce Rauner signed House Bill 40 into law, allowing the use of taxpayer funds for abortion services for those on state employee health insurance and Medicaid, Sen. Sam McCann of Plainview filed legislation to overturn the measure.“I am taking action on behalf of the conservative families in …