Hide “recently modified” placeholder

To hide the “Recently Modified” section from SharePoint 2010 wiki pages do the following:

– Open %ProgramFiles%\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\DocumentTemplates\wkpstd.aspx in a text editor

Search for the line <SharePoint:RecentChangesMenu runat=”server” id=”RecentChanges” />

Replace it by <SharePoint:RecentChangesMenu runat=”server” id=”RecentChanges” visible=”false”/>

-Save and refresh the page.

It changes all wiki pages based on the template.

source: (unsupported but fast)

http://twocentsoncomputerstuff.blogspot.nl/2010/11/remove-recently-modified-from.html

even more you can find here:(supported)

http://ranaictiu-technicalblog.blogspot.nl/2010/07/sharepoint-2010-hide-recently-modified.html