s4:torture:raw:notify: remove CHECK_WSTR2.

s4:torture:raw:notify: remove CHECK_WSTR2.

The original CHECK_WSTR() macro was not setting torture failure,
leading to errors instead of propoer failures.

The original CHECK_WSTR2() macro was exactly like the CHECK_WSTR
macro but using propoer torture_result() calls.

This patch removes the original CHECK_WSTR(), renames CHECK_WSTR2
to CHECK_WSTR and adapts the callers, hence removing the source
of many potential missing torture_assert messages.

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>