Remove hedging functionality from NetworkInterfaceTL. Update startCommand and startExhaustCommand to unconditionally resize the request's target list to 1 element, rather than only doing so when hedging is disabled. All checks for hedging options can then be removed, as well as any hedging-related metrics gathering. Finally, the loop that starts multiple requests can be rewritten as a single set of statements. These changes will remove the server's capability to perform hedging, so any tests that begin to fail as a result will need to be deleted at this stage.