Remove @author from javadocs

There is a long standing board resolution that discourages use of @author tags in Apache project javadocs. jclouds source also contains @author tags attributing authorship to people that are not committers (from the Github days). I know its a pain, but it might be a good task prior to 1.8 and maybe even a 1.7.x release.

Hadoop and other projects also have automated checks to flag patches with @author tags so that is something to consider down the road.