reenable kernel32:pipe test

try and comment out test_read_write() in kernel32:file test,
it causes MDL PROBE FAILED errors

svn path=/trunk/; revision=43001

rostests/winetests/kernel32/file.c

@@ -2811,7 +2811,7 @@ START_TEST(file)
     test_MapFile();
     test_GetFileType();
     test_async_file_errors();
-    test_read_write();
+    //test_read_write();
     test_OpenFile();
     test_overlapped();
     test_RemoveDirectory();

rostests/winetests/kernel32/testlist.c

@@ -64,7 +64,7 @@ const struct test winetest_testlist[] =
     { "module", func_module },
     { "mailslot", func_mailslot },
     { "path", func_path },
-    //{ "pipe", func_pipe },
+    { "pipe", func_pipe },
     { "process", func_process },
     { "profile", func_profile },
     { "resource", func_resource },