[pstl] Remove warnings in tests and headers

Mostly unused parameter, unused local typedefs and shadowed declarations.
This massaging it necessary if we want to be able to run the tests under
the libc++ lit configuration.

llvm-svn: 363872

1 files changed, 0 insertions, 1 deletions

diff --git a/pstl/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp b/pstl/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp
index 3edd3e87599..cc2bf186862 100644
--- a/pstl/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp
+++ b/pstl/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp
@@ -79,7 +79,6 @@ struct test_one_policy
     {
         using namespace std;
         using T = typename iterator_traits<Iterator1>::value_type;
-        using DifferenceType = typename iterator_traits<Iterator1>::difference_type;
 
         fill(actual_b, actual_e, T(-123));
         Iterator1 actual_return = reverse_copy(exec, data_b, data_e, actual_b);