Revert "pjsip_location: Delete contact_status object when contact is deleted"

This reverts commit 0a9941de.

Matt,

This patch causes another problem and should not have been needed.
Before this patch, persistent_endpoint_contact_deleted_observer WAS
deleting the contact_status when ast_sip_location_delete_contact was
called.  By deleting it yourself in ast_sip_location_delete_contact
it was gone before the observer could run and the observer therefore
was throwing an error and not sending stasis/AMI/statsd messages.

So, I don't think this was the cause of your original issue.  I also
had verified the contact AMI and statsd lifecycle and it was working.
I'll double check now though.

ASTERISK-25675
Reported-by: Daniel Journo

Change-Id: Ib586a6b7f90acb641b0c410f659743ab90e84f1a

res/res_pjsip/location.c

@@ -317,14 +317,6 @@ int ast_sip_location_update_contact(struct ast_sip_contact *contact)
 
 int ast_sip_location_delete_contact(struct ast_sip_contact *contact)
 {
-	void *contact_status_obj;
-
-	contact_status_obj = ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), CONTACT_STATUS, ast_sorcery_object_get_id(contact));
-	if (contact_status_obj) {
-		ast_sorcery_delete(ast_sip_get_sorcery(), contact_status_obj);
-		ao2_ref(contact_status_obj, -1);
-	}
-
 	return ast_sorcery_delete(ast_sip_get_sorcery(), contact);
 }