Reduce logging data races, fix MySQL test race condition (#7994)

* fix races

* revert unintentional change

* fix test as intended

api4/saml.go

@@ -7,14 +7,10 @@ import (
 	"mime/multipart"
 	"net/http"
 
-	l4g "github.com/alecthomas/log4go"
 	"github.com/mattermost/mattermost-server/model"
-	"github.com/mattermost/mattermost-server/utils"
 )
 
 func (api *API) InitSaml() {
-	l4g.Debug(utils.T("api.saml.init.debug"))
-
 	api.BaseRoutes.SAML.Handle("/metadata", api.ApiHandler(getSamlMetadata)).Methods("GET")
 
 	api.BaseRoutes.SAML.Handle("/certificate/public", api.ApiSessionRequired(addSamlPublicCertificate)).Methods("POST")