tidy up

src/librustc/mir/mod.rs

@@ -2932,5 +2932,3 @@ fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool {
         }
     }
 }
-
-

src/librustc_mir/borrow_check/nll/liveness_map.rs

@@ -55,4 +55,4 @@ pub fn compute(mir: &Mir) -> Self {
     }
 }
 
-newtype_index!(LocalWithRegion);
+newtype_index!(LocalWithRegion);

src/librustc_mir/util/liveness.rs

@@ -544,5 +544,3 @@ pub fn write_mir_fn<'a, 'tcx, V: Idx>(
     writeln!(w, "}}")?;
     Ok(())
 }
-
-