Removed invalid css property.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9431 e93f8b46-1217-0410-a6f0-8f06a7374b81

public/stylesheets/application.css

@@ -348,7 +348,7 @@ div#issue-changesets div.changeset { padding: 4px;}
 div#issue-changesets div.changeset { border-bottom: 1px solid #ddd; }
 div#issue-changesets p { margin-top: 0; margin-bottom: 1em;}
 
-.journal ul.details img {margin:0 0 -3px 4px; vertical-middle:base;}
+.journal ul.details img {margin:0 0 -3px 4px;}
 
 div#activity dl, #search-results { margin-left: 2em; }
 div#activity dd, #search-results dd { margin-bottom: 1em; padding-left: 18px; font-size: 0.9em; }