Remove unused create_call.cc

Bug: None
Change-Id: I337c85cc141f0220b2e2b109397f54f25f6056e5
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/375560
Commit-Queue: Evan Shrubsole <eshr@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#43810}
diff --git a/call/create_call.cc b/call/create_call.cc
deleted file mode 100644
index f0c4b54..0000000
--- a/call/create_call.cc
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#include "call/create_call.h"
-
-#include <memory>
-#include <optional>
-
-#include "api/test/simulated_network.h"
-#include "api/units/time_delta.h"
-#include "call/call.h"
-
-namespace webrtc {
-
-std::unique_ptr<Call> CreateCall(CallConfig config) {
-  std::vector<DegradedCall::TimeScopedNetworkConfig> send_degradation_configs =
-      GetNetworkConfigs(config.env.field_trials(), /*send=*/true);
-  std::vector<DegradedCall::TimeScopedNetworkConfig>
-      receive_degradation_configs =
-          GetNetworkConfigs(config.env.field_trials(), /*send=*/false);
-
-  std::unique_ptr<Call> call = Call::Create(std::move(config));
-
-  if (!send_degradation_configs.empty() ||
-      !receive_degradation_configs.empty()) {
-    return std::make_unique<DegradedCall>(
-        std::move(call), send_degradation_configs, receive_degradation_configs);
-  }
-
-  return call;
-}
-
-}  // namespace webrtc