Delete RtcEventLogFactory factory as now unused

Bug: webrtc:10206, webrtc:10284
Change-Id: I34fa780f566b52e375ec625bf0d5d02c505d9912
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/143782
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28400}
diff --git a/sdk/BUILD.gn b/sdk/BUILD.gn
index 6036a4d..f255e7b 100644
--- a/sdk/BUILD.gn
+++ b/sdk/BUILD.gn
@@ -917,12 +917,12 @@
         "../api/audio_codecs:audio_codecs_api",
         "../api/audio_codecs:builtin_audio_decoder_factory",
         "../api/audio_codecs:builtin_audio_encoder_factory",
+        "../api/rtc_event_log:rtc_event_log_factory",
         "../api/task_queue:default_task_queue_factory",
         "../api/video:video_frame",
         "../api/video:video_rtp_headers",
         "../api/video_codecs:video_codecs_api",
         "../common_video",
-        "../logging:rtc_event_log_impl_base",
         "../media:rtc_media_base",
         "../modules:module_api",
         "../modules/audio_device:audio_device_api",