SPRINGFIELD — To the scores of sheriffs in Illinois who reportedly have vowed not to enforce the ban on semiautomatic weapons that took effect last week, Gov. J.B. Pritzker has a succinct answer: Yes, you will.Nine in 10 of the state’s sheriffs, joining with gun-rights advocates in declaring the prohibition unconstitutional, have sworn off zealous enforcement of the law. It prohibits the manufacture or possession of dozens of rapid-fire weapons and attachments and requires registration of those previously owned …