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/call/BUILD.gn b/call/BUILD.gn
index df10933..694a2eb 100644
--- a/call/BUILD.gn
+++ b/call/BUILD.gn
@@ -377,7 +377,6 @@
       "../api/video:video_rtp_headers",
       "../audio",
       "../logging:rtc_event_log_api",
-      "../logging:rtc_event_log_impl_base",
       "../modules/audio_device:mock_audio_device",
       "../modules/audio_mixer",
       "../modules/audio_mixer:audio_mixer_impl",
@@ -428,13 +427,13 @@
       "../api:rtc_event_log_output_file",
       "../api:simulated_network_api",
       "../api/audio_codecs:builtin_audio_encoder_factory",
+      "../api/rtc_event_log:rtc_event_log_factory",
       "../api/task_queue",
       "../api/task_queue:default_task_queue_factory",
       "../api/video:builtin_video_bitrate_allocator_factory",
       "../api/video:video_bitrate_allocation",
       "../api/video_codecs:video_codecs_api",
       "../logging:rtc_event_log_api",
-      "../logging:rtc_event_log_impl_base",
       "../modules/audio_coding",
       "../modules/audio_device",
       "../modules/audio_device:audio_device_impl",