Remove system_wrappers/../cpu_info.*

This has been moved to rtc_base/.

Bug: webrtc:42228262
Change-Id: I5a8a6afdffc1cde3c2ab8a26568ee1d0f54676d8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/392941
Commit-Queue: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Auto-Submit: Fredrik Solenberg <solenberg@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#44758}
diff --git a/system_wrappers/BUILD.gn b/system_wrappers/BUILD.gn
index a36adfa..a1fab28 100644
--- a/system_wrappers/BUILD.gn
+++ b/system_wrappers/BUILD.gn
@@ -17,11 +17,9 @@
   sources = [
     "include/clock.h",
     "include/cpu_features_wrapper.h",
-    "include/cpu_info.h",
     "include/ntp_time.h",
     "source/clock.cc",
     "source/cpu_features.cc",
-    "source/cpu_info.cc",
   ]
 
   defines = []
@@ -31,7 +29,6 @@
     "../api/units:timestamp",
     "../modules:module_api_public",
     "../rtc_base:checks",
-    "../rtc_base:cpu_info",
     "../rtc_base:logging",
     "../rtc_base:safe_conversions",
     "../rtc_base:timeutils",
diff --git a/system_wrappers/include/cpu_info.h b/system_wrappers/include/cpu_info.h
deleted file mode 100644
index 6bc99b6..0000000
--- a/system_wrappers/include/cpu_info.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- *  Copyright (c) 2011 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 SYSTEM_WRAPPERS_INCLUDE_CPU_INFO_H_
-#define SYSTEM_WRAPPERS_INCLUDE_CPU_INFO_H_
-
-#include <stdint.h>
-
-namespace webrtc {
-
-class CpuInfo {
- public:
-  // Wrapper kept while updating dependencies.
-  static uint32_t DetectNumberOfCores();
-
- private:
-  CpuInfo() {}
-};
-
-}  // namespace webrtc
-
-#endif  // SYSTEM_WRAPPERS_INCLUDE_CPU_INFO_H_
diff --git a/system_wrappers/source/cpu_info.cc b/system_wrappers/source/cpu_info.cc
deleted file mode 100644
index 90bf720..0000000
--- a/system_wrappers/source/cpu_info.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- *  Copyright (c) 2011 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 "system_wrappers/include/cpu_info.h"
-
-#include <cstdint>
-
-#include "rtc_base/cpu_info.h"
-
-namespace webrtc {
-
-uint32_t CpuInfo::DetectNumberOfCores() {
-  return cpu_info::DetectNumberOfCores();
-}
-
-}  // namespace webrtc