Revert of Refactor webrtc/modules/video_processing for GN check (patchset #3 id:40001 of https://codereview.webrtc.org/2595543002/ )

Reason for revert:
This CL broke some buildbots. I will investigate it later.

Original issue's description:
> Refactor webrtc/modules/video_processing for GN check
>
> This moves some GN check configurations out of .gn to individual
> targets.
>
> The now checked target is:
> "//webrtc/modules/video_processing/*"
>
> BUG=webrtc:6828
> NOTRY=True
>
> Review-Url: https://codereview.webrtc.org/2595543002
> Cr-Commit-Position: refs/heads/master@{#15732}
> Committed: 00a810b844

TBR=kjellander@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6828

Review-Url: https://codereview.webrtc.org/2594973002
Cr-Commit-Position: refs/heads/master@{#15733}

webrtc/modules/video_processing/BUILD.gn

@@ -26,7 +26,6 @@ rtc_static_library("video_processing") {
   ]
 
   deps = [
-    "../../base:rtc_base_approved",
     "../../common_audio",
     "../../common_video",
     "../../modules/utility",
@@ -47,20 +46,11 @@ rtc_static_library("video_processing") {
 
 if (build_video_processing_sse2) {
   rtc_static_library("video_processing_sse2") {
-    # TODO(mbonadei): Remove (bugs.webrtc.org/6828)
-    # Errors on cyclic dependency with :video_processing if enabled.
-    check_includes = false
-
     sources = [
       "util/denoiser_filter_sse2.cc",
       "util/denoiser_filter_sse2.h",
     ]
 
-    deps = [
-      "../../base:rtc_base_approved",
-      "../../system_wrappers",
-    ]
-
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]