Revert "Update timezone data to 2016b"

This reverts commit 7bcee86edcc8cb0f969c719fed9bc3bd04de142f.

This is in preparation for applying the 2016a -> 2016d update
to mnc-dr1.5-dev (commit 2880a020e3859c5febde03be4921e2fbb37f06bf)
which cannot currently be applied because the 2016b update is
present in mnc-dr1.5-dev.

Bug: 29528355
diff --git a/libc/zoneinfo/tzdata b/libc/zoneinfo/tzdata
index 5821117..d2cc535 100644
--- a/libc/zoneinfo/tzdata
+++ b/libc/zoneinfo/tzdata
Binary files differ