Revert "PT-45056929 - Add back support agent dial strings in openacd"

This reverts commit 22b3c99177e32bb0abe41cdf8be7520262ffee8c.

Conflicts:

	sipXconfig/neoconf/src/org/sipfoundry/sipxconfig/openacd/OpenAcdContextImpl.java
Merge branch 'release-4.6-openacd-integration' into release-4.6-unstable