Respond to CR.

Signal/src/call/CallService.swift

@@ -1527,14 +1527,6 @@ private class SignalCallData: NSObject {
         terminateCall()
     }
 
-    public func terminateCallDueToCriticalError() {
-        SwiftAssertIsOnMainThread(#function)
-
-        owsFail("\(logTag) \(#function)")
-
-        terminateCall()
-    }
-
     /**
      * Clean up any existing call state and get ready to receive a new call.
      */

Signal/src/call/UserInterface/CallUIAdapter.swift

@@ -68,7 +68,6 @@ extension CallUIAdaptee {
 
         guard self.callService.call == nil else {
             owsFail("unexpectedly found an existing call when trying to start outgoing call: \(recipientId)")
-            self.callService.terminateCallDueToCriticalError()
             return
         }