fix: Remove resource addresses (#982)

These were added under the impression that there was significant
user-experience impact if multiple resources share the same name.

This hasn't proven to be true yet, so figured we'd take this out
until it becomes necessary.

coderd/database/dump.sql

@@ -270,7 +270,6 @@ CREATE TABLE workspace_resources (
     created_at timestamp with time zone NOT NULL,
     job_id uuid NOT NULL,
     transition workspace_transition NOT NULL,
-    address character varying(256) NOT NULL,
     type character varying(192) NOT NULL,
     name character varying(64) NOT NULL
 );