Update clippy_utils/src/higher.rs

Co-authored-by: Cameron Steffen <cam.steffen94@gmail.com>

Author: smoelius

clippy_utils/src/higher.rs

@@ -633,8 +633,6 @@ impl<'tcx> Iterator for FormatArgsIter<'tcx> {
                     if let LitKind::Int(u128, _) = lit.node;
                     then {
                         let i = usize::try_from(u128).unwrap();
-                        assert!(i < value_args.len());
-                        assert!(i < args.len());
                         FormatArgsArg { value: value_args[i], arg: &args[i], fmt: Some(fmt) }
                     } else {
                         panic!("malformed `core::fmt::rt::v1::Argument`");