Remove some unneded checks as identified by IBM's BEAM checker.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14518 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/drd/drd_thread.c b/drd/drd_thread.c
index 5e53a53..6dac427 100644
--- a/drd/drd_thread.c
+++ b/drd/drd_thread.c
@@ -380,7 +380,7 @@
       HChar* msg;
 
       msg = VG_(malloc)("drd.main.dptj.1", msg_size);
-      tl_assert(msg);
+
       VG_(snprintf)(msg, msg_size,
                     "drd_post_thread_join joiner = %d, joinee = %d",
                     drd_joiner, drd_joinee);