[sairedis]: revert deadlock fix in sonic-sairedis submodule (#934)

lguohan · web-flow · commit 48f1a638cb66 · 2017-09-05T20:55:07.000-07:00
The deadlock fix in sonic-sairedis introduce other race conditions which
is more prevelant.
diff --git a/src/sonic-sairedis b/src/sonic-sairedis
@@ -1 +1 @@
-Subproject commit 3f4afbbd9d7ed2f077922e0cb0d59df743e34a9a
+Subproject commit 7e70b4d63020fc9ea1aa009c264e4effab7bcda0
