Remove OS from dual boot

Hi,
simple question (i hope)...
had a dual boot setup Windows7 (main) and Server2008 to test and play about with it before using it at work.
i no longer want the server 2008 OS and want to remove it completely.

my understanding before was to edit msconfig and delete some 'files'..
would i now have to use 'bcdedit'? and what else?