[x/blog] content/http-tracing: remove Dave Cheney
[x/blog] content/http-tracing: remove Dave Cheney

He mentioned that the project is a group effort, hence we should
not single out his name.

Change-Id: I775a37fa8d7a231942642809c85652e58d0edb08
Reviewed-on: https://go-review.googlesource.com/30352
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>
X-Blog-Commit: 32dd9e50b19739d4d1ad1c3dc8ec119218f126f2

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website