memcheck: Delete entire directory.

        * gcc.c-torture/execute/memcheck: Delete entire directory.
        (files: blkarg.c blkarg.x driver.c driver.h t1.c t2.c t3.c
        t4.c t5.c t6.c t7.c t8.c t9.c template memcheck.exp)

From-SVN: r47737

gcc/testsuite/gcc.c-torture/execute/memcheck/t1.c

-/* Must define:
-   int expect_error;
-   void test ();
-   void setup ();   -- NOCHECK */
-
-#include "driver.h"
-
-int expect_error = 0;
-
-int *ip;
-
-void test ()
-{
-  ip = c_malloc (sizeof (int));
-  *ip = 42;
-  t2 ();
-}
-
-int t2 ()
-{
-  return *ip;
-}
-
-void setup () /* NOCHECK */
-{
-  mark_region (&ip, sizeof (ip), ACCESS_RW);
-}