http://www.mydigitallife.info/2009/01/12/how-to-remove-and-hide-blogger-navbar-top-navigation-bar/

http://www.mydigitallife.info/2009/01/12/how-to-remove-and-hide-blogger-navbar-top-navigation-bar/

To remove navbar

Search for the following line of code:
]]>

Before the line, add in the following line of code:

#navbar { display: none; }

or:

#navbar-iframe { display: none !important; }