Fixed change log for version 0.2.

Records about Go were added by mistake.
The relevant patches haven't been committed yet.

docs/changes.xml

@@ -113,12 +113,6 @@ Initial release of PHP module for NGINX Unit.
          date="2017-10-19" time="18:00:00 +0300"
          packager="Andrei Belov <defan@nginx.com>">
 
-<change type="feature">
-<para>
-Go package improvements.
-</para>
-</change>
-
 <change type="feature">
 <para>
 configuration persistence.
@@ -137,12 +131,6 @@ application "timeout" property.
 </para>
 </change>
 
-<change type="bugfix">
-<para>
-Go application crashed under load.
-</para>
-</change>
-
 <change type="bugfix">
 <para>
 POST request for PHP were handled incorrectly.