Remove timestamps from docs/api-reference/*/*.html

If there are 2 or more PR(s) in the queue, they will end up with
conflicts (and rechecks). So let us remove the timestamp entirely
when we generate the files.

Fixes #46814

federation/docs/api-reference/extensions/v1beta1/definitions.html

@@ -7294,7 +7294,7 @@ Both these may change in the future. Incoming requests are matched against the h
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-06-10 06:05:28 UTC
+
 </div>
 </div>
 </body>

federation/docs/api-reference/extensions/v1beta1/operations.html

@@ -9412,7 +9412,7 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-05-17 22:26:29 UTC
+
 </div>
 </div>
 </body>

federation/docs/api-reference/federation/v1beta1/definitions.html

@@ -1573,7 +1573,7 @@ Examples:<br>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-06-04 01:49:42 UTC
+
 </div>
 </div>
 </body>

federation/docs/api-reference/federation/v1beta1/operations.html

@@ -1821,7 +1821,7 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-05-17 22:26:20 UTC
+
 </div>
 </div>
 </body>

federation/docs/api-reference/v1/definitions.html

@@ -2338,7 +2338,7 @@ Examples:<br>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-06-04 01:49:49 UTC
+
 </div>
 </div>
 </body>

federation/docs/api-reference/v1/operations.html

@@ -8968,7 +8968,7 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2017-05-25 03:59:22 UTC
+
 </div>
 </div>
 </body>