Remove RTC_DISALLOW_COPY_AND_ASSIGN from rtc_base/

Bug: webrtc:13555, webrtc:13082
Change-Id: I406b7f04497562866ea3329e97c5adc96e927b6f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/245680
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Commit-Queue: (Daniel.L) Byoungchan Lee <daniel.l@hpcnt.com>
Cr-Commit-Position: refs/heads/main@{#35691}
diff --git a/rtc_base/buffer_queue.h b/rtc_base/buffer_queue.h
index ee435f4..b018e16 100644
--- a/rtc_base/buffer_queue.h
+++ b/rtc_base/buffer_queue.h
@@ -18,7 +18,6 @@
 
 #include "api/sequence_checker.h"
 #include "rtc_base/buffer.h"
-#include "rtc_base/constructor_magic.h"
 #include "rtc_base/system/no_unique_address.h"
 #include "rtc_base/thread_annotations.h"
 
@@ -30,6 +29,9 @@
   BufferQueue(size_t capacity, size_t default_size);
   ~BufferQueue();
 
+  BufferQueue(const BufferQueue&) = delete;
+  BufferQueue& operator=(const BufferQueue&) = delete;
+
   // Return number of queued buffers.
   size_t size() const;
 
@@ -61,8 +63,6 @@
   const size_t default_size_;
   std::deque<Buffer*> queue_ RTC_GUARDED_BY(sequence_checker_);
   std::vector<Buffer*> free_list_ RTC_GUARDED_BY(sequence_checker_);
-
-  RTC_DISALLOW_COPY_AND_ASSIGN(BufferQueue);
 };
 
 }  // namespace rtc