Remove stale dependencies from APM static lib target:

- protobuf library
- file_wrapper.h

These appear to have been left behind during the AecDump refactoring.
After this CL, APM no longer depends on zlib by default! :)

Bug: webrtc:9139
Change-Id: I12a8df2a17a575515b9c07165825f0879c4e15eb
Reviewed-on: https://webrtc-review.googlesource.com/70762
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Reviewed-by: Alex Loiko <aleloi@webrtc.org>
Commit-Queue: Fredrik Solenberg <solenberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22923}

modules/audio_processing/audio_processing_impl.h

@@ -24,9 +24,7 @@
 #include "rtc_base/function_view.h"
 #include "rtc_base/gtest_prod_util.h"
 #include "rtc_base/ignore_wundef.h"
-#include "rtc_base/protobuf_utils.h"
 #include "rtc_base/swap_queue.h"
-#include "rtc_base/system/file_wrapper.h"
 #include "rtc_base/thread_annotations.h"
 
 namespace webrtc {