Remove old set

Author: tejasd

firebase-perf/src/main/java/com/google/firebase/perf/session/PerfSession.java

@@ -133,7 +133,6 @@ public static com.google.firebase.perf.v1.PerfSession[] buildAndSort(
 
     // TODO(b/394127311): Added as part of legacy sessions. Remove this in a future release.
     if (!foundVerboseSession) {
-      perfSessions[0] = perfSessionAtIndexZero;
       if (isLegacy(perfSessionAtIndexZero.getSessionId()) && sessions.size() > 1) {
         // Swaps the first session ID that's a legacy session ID with the second in the list.
         perfSessions[0] = perfSessions[1];