strnlen.c: Remove DejaGnu directives ignored by the test harness.

gcc/testsuite/ChangeLog:

	* gcc.c-torture/execute/builtins/strnlen.c: Remove DejaGnu directives
	ignored by the test harness.

From-SVN: r262981

gcc/testsuite/ChangeLog

+2018-07-25  Martin Sebor  <msebor@redhat.com>
+
+	* gcc.c-torture/execute/builtins/strnlen.c: Remove DejaGnu directives
+	ignored by the test harness.
+
 2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
 	Thomas Koenig <tkoenig@gcc.gnu.org>
 

gcc/testsuite/gcc.c-torture/execute/builtins/strnlen.c

 /* PR tree-optimization/81384 - built-in form of strnlen missing
-   Test to verify that strnlen built-in expansion works correctly
-   in the absence of tree strlen optimization.
-   { dg-do run }
-   { do-options "-O2 -fno-tree-strlen" }  */
+   Test to verify that strnlen built-in expansion works correctly.  */
 
 #define PTRDIFF_MAX __PTRDIFF_MAX__
 #define SIZE_MAX    __SIZE_MAX__