kie-camel: removed unused commons-httpclient dependency

(cherry picked from commit 6486ade47a58d4a3e49af003440d3f9e9b6f879c)
Removing the drools-spring-legacy5 and drools-camel-legacy5 dirs since they are no longer part of the build (cherry picked from commit 731320d5ed232320091fe034745e0af6f6fd8137)