Revert of Add metal view, shaders and renderer.

webrtc/sdk/BUILD.gn

Index: webrtc/sdk/BUILD.gn
diff --git a/webrtc/sdk/BUILD.gn b/webrtc/sdk/BUILD.gn
index 2ef83d2a92cec0e28f55972bb5bbff3f831557e3..3e44f9b4a33c4a3d569369e970f9a16056e8e707 100644
--- a/webrtc/sdk/BUILD.gn
+++ b/webrtc/sdk/BUILD.gn
@@ -67,22 +67,7 @@
         "objc/Framework/Headers/WebRTC/RTCCameraPreviewView.h",
         "objc/Framework/Headers/WebRTC/UIDevice+RTCDevice.h",
       ]
-      if (current_cpu == "arm64") {
-        sources += [
-          "objc/Framework/Classes/Metal/RTCMTLNV12Renderer.h",
-          "objc/Framework/Classes/Metal/RTCMTLNV12Renderer.mm",
-          "objc/Framework/Classes/Metal/RTCMTLVideoView.m",
-        ]
-      }
-
       libs = [ "AVFoundation.framework" ]
-      if (current_cpu == "arm64") {
-        libs += [
-          "CoreVideo.framework",
-          "Metal.framework",
-          "MetalKit.framework",
-        ]
-      }
     }
     if (!build_with_chromium) {
       sources += [
@@ -306,7 +291,6 @@
         "objc/Framework/Headers/WebRTC/RTCMediaStreamTrack.h",
         "objc/Framework/Headers/WebRTC/RTCMetrics.h",
         "objc/Framework/Headers/WebRTC/RTCMetricsSampleInfo.h",
-        "objc/Framework/Headers/WebRTC/RTCMTLVideoView.h",
         "objc/Framework/Headers/WebRTC/RTCPeerConnection.h",
         "objc/Framework/Headers/WebRTC/RTCPeerConnectionFactory.h",
         "objc/Framework/Headers/WebRTC/RTCRtpCodecParameters.h",