Bug 1913624 - Remove expired telemetry histogram TELEMETRY_ASSEMBLE_PAYLOAD_EXCEPTION, r=TravisLong.

Depends on D219461

Differential Revision: https://phabricator.services.mozilla.com/D219462

toolkit/components/telemetry/Histograms.json

@@ -9143,15 +9143,6 @@
     "kind": "flag",
     "description": "Set if Telemetry failed to save the session data to disk."
   },
-  "TELEMETRY_ASSEMBLE_PAYLOAD_EXCEPTION": {
-    "record_in_processes": ["main"],
-    "products": ["firefox", "fennec", "thunderbird"],
-    "alert_emails": ["telemetry-client-dev@mozilla.com"],
-    "bug_numbers": [1250640],
-    "expires_in_version": "53",
-    "kind": "count",
-    "description": "Count of exceptions in TelemetrySession.getSessionPayload()."
-  },
   "TELEMETRY_EVENT_PING_SENT": {
     "record_in_processes": ["main"],
     "products": ["firefox", "fennec", "thunderbird"],

toolkit/components/telemetry/histogram-allowlists.json

@@ -837,7 +837,6 @@
     "SUBPROCESS_KILL_HARD",
     "SUBPROCESS_LAUNCH_FAILURE",
     "TELEMETRY_ARCHIVE_SESSION_PING_COUNT",
-    "TELEMETRY_ASSEMBLE_PAYLOAD_EXCEPTION",
     "TELEMETRY_INVALID_PAYLOAD_SUBMITTED",
     "TELEMETRY_INVALID_PING_TYPE_SUBMITTED",
     "TELEMETRY_PENDING_LOAD_FAILURE_PARSE",

toolkit/components/telemetry/pings/TelemetrySession.sys.mjs

@@ -764,11 +764,6 @@ var Impl = {
         reason,
         clearSubsession
       );
-    } catch (ex) {
-      Services.telemetry
-        .getHistogramById("TELEMETRY_ASSEMBLE_PAYLOAD_EXCEPTION")
-        .add(1);
-      throw ex;
     } finally {
       if (!Utils.isContentProcess && clearSubsession) {
         this.startNewSubsession();