Notice of Filing and Immediate Effectiveness of a Proposed Rule Change To Introduce Equities Purge Ports To (1) Establish Purge Ports for Equities Trading and Amend the Interpretations and Policies to Rule 11.10, Order Execution, To Reflect the Proposed Purge Ports, and (2) Modify the Fee Schedule Applicable To the Exchange's Equities Platform ("EDGX Equities") to Identify and To Set Fees for Purge Ports