Delete placeholder file rtc_base/function_view.h

Bug: None
Change-Id: If2d35a9745f1de6cc4d26814e8b7567a8466d831
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/148527
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28820}
diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index 0ca8ae2..b937714 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -56,7 +56,6 @@
     ":safe_compare",
     ":type_traits",
     "../api:array_view",
-    "../api:function_view",
     "../api:scoped_refptr",
     "system:arch",
     "system:unused",
@@ -80,7 +79,6 @@
     "copy_on_write_buffer.h",
     "event_tracer.cc",
     "event_tracer.h",
-    "function_view.h",
     "ignore_wundef.h",
     "location.cc",
     "location.h",
diff --git a/rtc_base/function_view.h b/rtc_base/function_view.h
deleted file mode 100644
index f465cc8..0000000
--- a/rtc_base/function_view.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- *  Copyright 2016 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.
- */
-
-#ifndef RTC_BASE_FUNCTION_VIEW_H_
-#define RTC_BASE_FUNCTION_VIEW_H_
-
-// This header is deprecated and will be removed. Please use the one,
-// that is specified below instead.
-
-#include "api/function_view.h"
-
-#endif  // RTC_BASE_FUNCTION_VIEW_H_