viced: h_SetupCallbackConn_r in removeAddress_r

removeAddress_r has some code that is identical to the
h_SetupCallbackConn_r function. Call the function instead.

Reviewed-on: http://gerrit.openafs.org/4645
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 0376255747ac17ed41afbc219f5a5978e58d8e9c)

Change-Id: I9f7b4fbc6059a15b30d675a7c78ac9ff00ba32b0
Reviewed-on: http://gerrit.openafs.org/9419
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>