Remove the call to get the blog owner's twitter profile image

The api call that was being used a) didn't account for network
latency and caused the response to the user to hang until the
api call returned and b) didn't work unless the requester (in
this case the server) authenticated itself to twitter, meaning
no image was returned anyway.
Merge pull request #4 from robgmills/remove-twitter-profile-img

Remove the call to get the blog owner's twitter profile image