Removed part of the s-ramp wagon proxy functionality.  The s-ramp wagon
now generates the maven meta-data, so the proxy no longer needs to do
that.

Issue:  https://issues.jboss.org/browse/SRAMP-217
Merge pull request #70 from EricWittmann/sramp-217-meta-data

(sramp-217) Generate maven meta-data XML files (wagon)