Revert "Implement Optimized CropAndScale for ObjCFrameBuffer"

This reverts commit 92043022488f80fd58c91d4dbb6889248de160ce.

Reason for revert: Breaks downstream projects

Original change's description:
> Implement Optimized CropAndScale for ObjCFrameBuffer
>
> The default implementation of CropAndScale uses ToI420() and then Scale,
> and this implementation behaves inefficiently with RTCCVPixelBuffer.
>
> Bug: None
> Change-Id: I422ef80d124db0354a2e696892e882a78db445bb
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/271140
> Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
> Commit-Queue: Daniel.L (Byoungchan) Lee <daniel.l@hpcnt.com>
> Auto-Submit: Daniel.L (Byoungchan) Lee <daniel.l@hpcnt.com>
> Commit-Queue: Kári Helgason <kthelgason@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#37877}

Bug: None
Change-Id: I3159d1bce9979399bca57c4ffdb26d356c2fd113
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/272700
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Christoffer Jansson <jansson@webrtc.org>
Owners-Override: Christoffer Jansson <jansson@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37881}

sdk/objc/base/RTCVideoFrameBuffer.h

@@ -25,13 +25,6 @@ RTC_OBJC_EXPORT
     @property(nonatomic, readonly) int width;
 @property(nonatomic, readonly) int height;
 
-- (id<RTC_OBJC_TYPE(RTCVideoFrameBuffer)>)cropAndScaleWith:(int)offsetX
-                                                   offsetY:(int)offsetY
-                                                 cropWidth:(int)cropWidth
-                                                cropHeight:(int)cropHeight
-                                                scaleWidth:(int)scaleWidth
-                                               scaleHeight:(int)scaleHeight;
-
 - (id<RTC_OBJC_TYPE(RTCI420Buffer)>)toI420;
 
 @end