message: Remove MBS and SMM from Codeowners file
diff: # At least one of the code owners below will be required on each PR:
  -* @markAtMicrosoft @sibille @mvegaca @dgomezc @smmatte @trevorNgo @jcoc611-microsoft @piotrmark @MehaKaushik @Tanya0609 @javieraparisivaldes
  +* @sibille @mvegaca @dgomezc @trevorNgo @jcoc611-microsoft @piotrmark @MehaKaushik @Tanya0609 @javieraparisivaldes
  