changed SysVarSetEnabled condition

Signed-off-by: Florent Poinsard <florent.poinsard@outlook.fr>

go/vt/vtgate/vcursor_impl.go

@@ -329,7 +329,7 @@ func (vc *vcursorImpl) FirstSortedKeyspace() (*vindexes.Keyspace, error) {
 
 // SysVarSetEnabled implements the ContextVSchema interface
 func (vc *vcursorImpl) SysVarSetEnabled() bool {
-	return vc.GetSessionEnableSystemSettings() && *sysVarSetEnabled
+	return vc.GetSessionEnableSystemSettings()
 }
 
 // KeyspaceExists provides whether the keyspace exists or not.