[SHRINKWRAP-157] Remove the external repositories; these are now all proxied by Nexus
[SHRINKWRAP-157] Remove the external repositories; these are now all proxied by Nexus

shrinkwrap/shrinkwrap,aslakknutsen/shrinkwrap,chirino/shrinkwrap,lordofthejars/shrinkwrap,gastaldi/shrinkwrap,ALRubinger/shrinkwrap