Remove this test to verify that things were modified since a certain time.

That assumption doesn't hold up when your environment doesn't have access to a
real clock and thinks it's living in 1970 :)

--- a/tests/test_fileapp.py    2015-04-23 13:48:37.000000000 -0700
+++ b/tests/test_fileapp.py	2016-02-22 19:20:08.332802417 -0800
@@ -223,8 +223,6 @@
                   status=304)
     res = app.get('/', headers={'If-None-Match': 'asdf'},
                   status=200)
-    res = app.get('/', headers={'If-Modified-Since': 'Sat, 1 Jan 2005 12:00:00 GMT'},
-                  status=200)
     res = app.get('/', headers={'If-Modified-Since': last_mod + '; length=100'},
                   status=304)
     res = app.get('/', headers={'If-Modified-Since': 'invalid date'},
pts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b'>refs</a><a class='active' href='/guix/log/NEWS'>log</a><a href='/guix/tree/NEWS?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b'>tree</a><a href='/guix/commit/NEWS?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b'>commit</a><a href='/guix/diff/NEWS?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/NEWS'>
<input type='hidden' name='id' value='7c4c781aa40c42d4cd10b8d9482199f3db345e1b'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b'>root</a>/<a href='/guix/log/NEWS?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b'>NEWS</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/NEWS?id=7c4c781aa40c42d4cd10b8d9482199f3db345e1b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-05-10 13:48:30 -0400'>2021-05-10</span></td><td><a href='/guix/commit/NEWS?id=80dc6ad4a89b68b5e837fc22c9b1322b86527bef'>Update NEWS.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-05-10 11:21:02 -0400'>2021-05-10</span></td><td><a href='/guix/commit/NEWS?id=7418a200742768d21b567916b25e4d3351472230'>Update NEWS.</a></td><td>Leo Famulari</td></tr>
<tr><td><span title='2021-05-10 11:42:03 +0200'>2021-05-10</span></td><td><a href='/guix/commit/NEWS?id=3a0fcaa0fe721792d1543e863c3fba805376bdac'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-04 16:57:05 +0200'>2021-05-04</span></td><td><a href='/guix/commit/NEWS?id=b37ab28401c55adbb8e36ea2931849636752524d'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-22 20:27:28 +0100'>2020-11-22</span></td><td><a href='/guix/commit/NEWS?id=a099685659b4bfa6b3218f84953cbb7ff9e88063'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-13 09:13:56 +0100'>2020-11-13</span></td><td><a href='/guix/commit/NEWS?id=1e272d42f6217b70c9801b93e46b144e9ab27664'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-09 23:27:09 +0100'>2020-11-09</span></td><td><a href='/guix/commit/NEWS?id=b51da3ccef74e5842b87e39eea839e36831e844e'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-07 19:36:10 +0100'>2020-11-07</span></td><td><a href='/guix/commit/NEWS?id=afa77bd2287f303aefdd00193309ccf57f6dcd93'>Update NEWS.</a></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-11-07 16:14:03 +0100'>2020-11-07</span></td><td><a href='/guix/commit/NEWS?id=e8b9b0fae076a86e2be1dcb87b666d4490bac0aa'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-05 23:27:22 +0100'>2020-11-05</span></td><td><a href='/guix/commit/NEWS?id=51916455d0bb283489162ef84afc8145b28b012c'>Update NEWS.</a></td><td>Ludovic Courtès</td></tr>