Disable morph logging during TestMain (#30948)

* rm "No TEST_DATABASE... override" log message

Let's only log if this value is actually overridden.

* rm "(Created|Dropped) temporary database" message

* only log "Pinging SQL" on subsequent attempts

* disable morph logging from TestMain

* Fix style issues in store test files

- Add missing parameter to migrate() function calls in tests
- Remove unused log function in settings.go
- Fix formatting with go fmt

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* within sqlstore, use "enable" vs "disable" for clarity

* remove trailing newline from morph logs

---------

Co-authored-by: Claude <noreply@anthropic.com>

server/channels/app/plugin_api_tests/test_db_driver/main.go

@@ -33,7 +33,7 @@ func (p *MyPlugin) MessageWillBePosted(_ *plugin.Context, _ *model.Post) (*model
 	rctx := request.TestContext(p.t)
 	settings := p.API.GetUnsanitizedConfig().SqlSettings
 	settings.Trace = model.NewPointer(false)
-	store, err := sqlstore.New(settings, rctx.Logger(), nil)
+	store, err := sqlstore.New(settings, rctx.Logger(), nil, sqlstore.DisableMorphLogging())
 	if err != nil {
 		panic(err)
 	}