Open the masterpage (v4.master) default or your own masterpage and search for the content placeholder ‘PlaceHolderLeftActions’:
<asp:ContentPlaceHolder id=”PlaceHolderLeftActions” runat=”server”> </asp:ContentPlaceHolder>
Change the content place holder property ‘visible’ to ‘false’
<asp:ContentPlaceHolder id=”PlaceHolderLeftActions” runat=”server” Visible=”false”> </asp:ContentPlaceHolder>
You can also accomplish this by adding style between your head tags in your masterpage:
<style type=”text/css”> .s4-recentchanges { display:none; } </style>
or add an Content Editor Web Part to your page and choose HTML > Edit HTML Source > Paste the style and click save.
