Remove invalid assertions for 304 resp

Per the HTTP spec
(https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5)
http 304 responses should not include entity headers. Proxies (such as
apache) remove these headers (rightfully) and therefore make it
impossible to test behind a proxy.

Change-Id: I2e26c188e723002e8eb058cfb2d881ab858cfaa4
1 file changed