fix: Tidy up closes for nicer output (#4605)

* fix: Tidy up closes for nicer output

There was a context canceled message that would appear
because of traces, and this was using the wrong close.

I don't think it was causing any specific problems, but
it could make a replica warning appear on restart.

* Fix migration and experimental

coderd/database/dump.sql

@@ -1,9 +1,5 @@
 -- Code generated by 'make coderd/database/generate'. DO NOT EDIT.
 
-CREATE EXTENSION IF NOT EXISTS pgcrypto WITH SCHEMA public;
-
-COMMENT ON EXTENSION pgcrypto IS 'cryptographic functions';
-
 CREATE TYPE api_key_scope AS ENUM (
     'all',
     'application_connect'

coderd/database/migrations/000059_file_id.up.sql

@@ -14,9 +14,6 @@ BEGIN;
 -- Drop the primary key on hash.
 ALTER TABLE files DROP CONSTRAINT files_pkey;
 
--- This extension is required by gen_random_uuid
-CREATE EXTENSION IF NOT EXISTS pgcrypto;
-
 -- Add an 'id' column and designate it the primary key.
 ALTER TABLE files ADD COLUMN
 	id uuid NOT NULL PRIMARY KEY DEFAULT gen_random_uuid ();