Remove redundant dg-do directive from test

	* testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
	directive.

From-SVN: r269365

libstdc++-v3/ChangeLog

 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
 
+	* testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
+	directive.
+
 	* include/std/memory_resource (polymorphic_allocator): Add default
 	template argument for C++20.
 	(polymorphic_allocator::allocate_bytes)

libstdc++-v3/testsuite/26_numerics/bit/bitops.rot/rotl.cc

@@ -15,8 +15,6 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-// { dg-do run { target c++11 } }
-
 // { dg-options "-std=gnu++2a" }
 // { dg-do compile { target c++2a } }