Removed (*App).Shutdown and updated all references. (#15088)

app/opentracing/opentracing_layer.go

@@ -13330,21 +13330,6 @@ func (a *OpenTracingAppLayer) SetTeamIconFromMultiPartFile(teamId string, file m
 	return resultVar0
 }
 
-func (a *OpenTracingAppLayer) Shutdown() {
-	origCtx := a.ctx
-	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.Shutdown")
-
-	a.ctx = newCtx
-	a.app.Srv().Store.SetContext(newCtx)
-	defer func() {
-		a.app.Srv().Store.SetContext(origCtx)
-		a.ctx = origCtx
-	}()
-
-	defer span.Finish()
-	a.app.Shutdown()
-}
-
 func (a *OpenTracingAppLayer) SlackAddBotUser(teamId string, log *bytes.Buffer) *model.User {
 	origCtx := a.ctx
 	span, newCtx := tracing.StartSpanWithParentByContext(a.ctx, "app.SlackAddBotUser")