SPRINGFIELD— Gov. Bruce Rauner wants to roll back income taxes but did not identify how in his State of the State address this afternoon.The Republican has previously said he wants to reverse the income tax increase the legislature approved last summer.The hike went from 3.75 percent to 4.95 percent. He said at the Capitol that “we cannot tax and borrow our way into prosperity” and urged lawmakers to “curb spending” and boost job growth.But he gave no specifics.Rauner will give his budget …