Remove commons-httpclient as it's not used
Remove commons-httpclient as it's not used

 * there were basically two httpclient implementations:
   commons-httpclient:commons-httpclient and
   org.apache.httpcomponents:httpclient. The commons one
   is quite old and for example the Wagon depends on APIs
   introduced later. Those APIs are in the newer version
   of org.apache*:httpclient.

thradec/wolf-validator,kpiwko/wolf-validator,thradec/redhat-repository-validator,thradec/redhat-repository-validator,thradec/wolf-validator,kpiwko/wolf-validator