[x/blog] content: fix or remove broken links in Google I/O 2010 article
[x/blog] content: fix or remove broken links in Google I/O 2010 article

The original destination of these links seems to have vanished.
It doesn't really matter, so just remove them.  Leave a link to the
main Google I/O blog post, and to the video of the Go programming talk.

This particular blog article is not too interesting today but I guess
it's a reminder of the early days.

Change-Id: I8d90c84d9eb442ee4028a875d2df670f444be417
Reviewed-on: https://go-review.googlesource.com/c/blog/+/190717
Reviewed-by: Dmitri Shuralyov <d181b7fea0ec87c86ba5a890ab716db52498e3ba@golang.org>
Reviewed-by: Shulhan <fb1c678b53a276511d14a8a9b15b86ceadd26d11@gmail.com>
X-Blog-Commit: 525c9e00fa4448f39f97c7560e9704d6837602c0

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