[Telemetry] Remove URL from TelemetryInfo.

docs/histogram-set-json-format.md

 <!-- Copyright 2016 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file.
 -->
 
 # HistogramSet JSON Format
 
 This document assumes familiarity with the concepts introduced in
 [how-to-write-metrics](/docs/how-to-write-metrics.md).
 
@@ skipping 38 matching lines @@
     },
   },
   {
     "guid": "923e4567-e89b-12d3-a456-426655440000",
     "type": "TelemetryInfo",
     "benchmarkName": "memory",
     "benchmarkStartMs": 1234567890,
     "label": "abc",
     "storyDisplayName": "my story",
     "storyGroupingKeys": {"state": "pre"},
-    "storyUrl": "http://example.com/",
     "storysetRepeatCounter": 0,
   },
 ]
 ```
 
 ## Histograms
 
 ### Required fields
 
  * `name`: any string
@@ skipping 82 matching lines @@
 
 This tracks telemetry parameters when the Histogram was produced to allow users
 to compare or merge results across similar telemetry story runs.
 
  * `benchmarkName`: string
  * `benchmarkStartMs`: number of ms since unix epoch
  * `label`: string
  * `legacyTIRLabel`: string
  * `storyDisplayName`: string
  * `storyGroupingKeys`: dictionary mapping from strings to strings
- * `storyUrl`: string
  * `storysetRepeatCounter`: number
 
 ### RevisionInfo
 
 This tracks revisions of the software under test to allow users to compare or
 merge results across revisions.
 
  * `chromiumCommitPosition`: optional integer
  * `v8CommitPosition`: optional integer
  * `chromium`: array of 1 or 2 strings
@@ skipping 80 matching lines @@
  * `values`: dictionary mapping from custom string name to the related
    Histogram's string guid
 
 ### RelatedEventSet
 
 This allows metrics to explain the magnitude of a sample as a parameter of a
 specific event or set of events in a trace.
 
  * `events`: array of dictionaries containing `stableId`, `title`, `start`,
    `duration` fields of Events