Remove commented-out code

src/librustc_mir/borrow_check/nll/type_check/liveness.rs

@@ -15,7 +15,6 @@
 use rustc::mir::{BasicBlock, Location, Mir};
 use rustc::mir::Local;
 use rustc::ty::{self, Ty, TyCtxt, TypeFoldable};
-//use rustc::ty::subst::Kind;
 use rustc::traits;
 use rustc::infer::InferOk;
 use rustc::util::common::ErrorReported;
@@ -243,7 +242,6 @@ fn add_drop_live_constraint(
 
                     final_obligations.extend(obligations);
 
-                    //let ty = self.cx.normalize(&ty, location);
                     let ty = cx.infcx.resolve_type_and_region_vars_if_possible(&ty);
                     match ty.sty {
                         ty::TyParam(..) | ty::TyProjection(..) | ty::TyAnon(..) => {