[tor-bugs] #21699 [Metrics/Atlas]: Remove HTML5 shim from index.html

[Tor Bug Tracker & Wiki]

#21699: Remove HTML5 shim from index.html
-------------------------------+-----------------
     Reporter:  Christian      |      Owner:  irl
         Type:  enhancement    |     Status:  new
     Priority:  Medium         |  Milestone:
    Component:  Metrics/Atlas  |    Version:
     Severity:  Minor          |   Keywords:
Actual Points:                 |  Parent ID:
       Points:                 |   Reviewer:
      Sponsor:                 |
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 PrivacyBadger noted that we're loading some elements from Google into the
 atlas.torproject.org website - and it turns out that index.html tries to
 load
 some HTML5 shim for IE. As the URL produces a 404 anyway, remove it. If IE
 really needs these bits, we should deliver it on our own, the license
 should
 allow this:

 ```https://cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv.js```
 ```@preserve HTML5 Shiv 3.7.3 | @afarkas @jdalton @jon_neal @rem |
 MIT/GPL2 Licensed```

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21699>
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