Notice of Filing and Immediate Effectiveness of Proposed Rule Change Amending Rule 13 Equities To Eliminate Good Til Cancelled Orders and Stop Orders, and Make Conforming Changes to Equities Rules 49, 61, 70, 104, 115A, 116, 118, 123, 123A, 123C, 123D, 501, 1000, 1004, and 6140