[release-branch.go1.4] time: Skip TestParseInLocation test.

This test is now failing due to tz data updates (see issue #19457) - skip the test
since it does not impact the use of Go 1.4 for bootstrapping.

Similar to issue #17545.

Updates #20672

Change-Id: I8017159fa2a59b052c49fda7d50be7a863e0a08d
Reviewed-on: https://go-review.googlesource.com/66073


Reviewed-by: Ian Lance Taylor <iant@golang.org>