To help inflation-plagued and struggling families ease the burden of buying necessities, several states are scrapping the sales tax on infant and adult diapers. Colorado and Iowa have both agreed since May to get rid of the state tax on all diapers, beginning in 2023. Florida and Maryland’s laws took effect in July. A bill in New York to do away with all local diaper sales taxes — there’s already no state diaper sales tax — was signed last week by Democratic Gov. Kathy Hochul. And Michigan and Ohio still have active bills, out of the dozens that were considered by legislatures this session. Th…