Bug 1754645 - Remove MEDIA_RECORDER_TRACK_ENCODER_INIT_TIMEOUT_TYPE probe. r=padenot

This probe reports when our different track encoders fail to init in the
MediaRecorder pipeline. The failure rates are very low, so I don't think keeping
this around is helping us.

Differential Revision: https://phabricator.services.mozilla.com/D139321

dom/media/encoder/TrackEncoder.cpp

@@ -220,8 +220,6 @@ void AudioTrackEncoder::TryInit(const AudioSegment& aSegment,
                "init with %d (default) channels!",
                AUDIO_INIT_FAILED_DURATION, DEFAULT_CHANNELS));
     nsresult rv = Init(DEFAULT_CHANNELS);
-    Telemetry::Accumulate(
-        Telemetry::MEDIA_RECORDER_TRACK_ENCODER_INIT_TIMEOUT_TYPE, 0);
     if (NS_FAILED(rv)) {
       TRACK_LOG(LogLevel::Error,
                 ("[AudioTrackEncoder %p]: Default-channel-init failed.", this));
@@ -545,8 +543,6 @@ void VideoTrackEncoder::Init(const VideoSegment& aSegment,
     TRACK_LOG(LogLevel::Warning,
               ("[VideoTrackEncoder %p]: No successful init for %ds.", this,
                VIDEO_INIT_FAILED_DURATION));
-    Telemetry::Accumulate(
-        Telemetry::MEDIA_RECORDER_TRACK_ENCODER_INIT_TIMEOUT_TYPE, 1);
     OnError();
     return;
   }

toolkit/components/telemetry/Histograms.json

@@ -11267,16 +11267,6 @@
     "bug_numbers": [1400757, 1429765, 1480589, 1532391, 1714303],
     "description": "The length of time (in seconds) that a recording lasted. Recorded when a recorder stops"
   },
-  "MEDIA_RECORDER_TRACK_ENCODER_INIT_TIMEOUT_TYPE": {
-    "record_in_processes": ["main", "content"],
-    "products": ["firefox", "fennec"],
-    "alert_emails": ["bvandyk@mozilla.com", "pehrsons@mozilla.com"],
-    "expires_in_version": "100",
-    "kind": "enumerated",
-    "n_values": 4,
-    "bug_numbers": [1400757, 1429765, 1480589, 1532391, 1714303],
-    "description": "Records the type of timeout that happened while attempting to init the encoder. Audio = 0, Video = 1. Recorded immediately following a timeout"
-  },
   "DEVTOOLS_ENTRY_POINT": {
     "record_in_processes": ["main"],
     "products": ["firefox", "fennec"],