The dselect database is not used in phase_2, so there is no need to update it

git-svn-id: https://rebeccablackos.svn.sourceforge.net/svnroot/rebeccablackos@2819 56e3d1a8-0179-4092-b3e2-9fbbcda0c0a9
Do not do apt-get update in phase 2. Reliance on network connectivity is only allowed in phase 1

git-svn-id: https://rebeccablackos.svn.sourceforge.net/svnroot/rebeccablackos@2820 56e3d1a8-0179-4092-b3e2-9fbbcda0c0a9