Revert "[tools] Keep raw data in the generated JSON for debugging purposes"

This reverts commit 1e1cca61.

Reason for revert: breaks builders

Original change's description:
> [tools] Keep raw data in the generated JSON for debugging purposes
> 
> R=​machenbach@chromium.org
> 
> Bug: chromium:861668
> Change-Id: Ic3225ed5919c21a7f6a9f21cba4aa491e1d6606d
> Reviewed-on: https://chromium-review.googlesource.com/1140331
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#54508}

TBR=machenbach@chromium.org,sergiyb@chromium.org

Change-Id: I10dff94c9cfe08c4a6b6d4d225b429fe16b95d19
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:861668
Reviewed-on: https://chromium-review.googlesource.com/1141784Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54517}

tools/callstats.py

@@ -18,7 +18,6 @@ For each command, you can try ./runtime-call-stats.py help command.
 '''
 
 import argparse
-import copy
 import json
 import os
 import re
@@ -555,8 +554,6 @@ def do_json(args):
             if domain not in versions[version]: versions[version][domain] = {}
             read_stats(os.path.join(root, filename),
                        versions[version][domain], args)
-  # TODO(sergiyb): Remove after resolving https://crbug.com/861668.
-  raw_data = copy.deepcopy(versions)
   for version, domains in versions.items():
     if args.aggregate:
       create_total_page_stats(domains, args)
@@ -573,8 +570,6 @@ def do_json(args):
           entry.append(round(s['ci']['perc'], 2))
         stats.append(entry)
       domains[domain] = stats
-  # TODO(sergiyb): Remove after resolving https://crbug.com/861668.
-  versions['raw_data'] = raw_data
   print json.dumps(versions, separators=(',', ':'))