[baseimage]: No need to mark packages as auto since all debootstrap i…

…nstalled (#6159)

Originally this line is used to mark all previously installed packages (deboostrap installed) as auto, so later if no other packages depend on anyone of them, it will be auto removed. Seems we gained little from this line, so let's remove it.

build_debian.sh

@@ -103,7 +103,6 @@ sudo LANG=C chroot $FILESYSTEM_ROOT mount
 ## Pointing apt to public apt mirrors and getting latest packages, needed for latest security updates
 sudo cp files/apt/sources.list.$CONFIGURED_ARCH $FILESYSTEM_ROOT/etc/apt/sources.list
 sudo cp files/apt/apt.conf.d/{81norecommends,apt-{clean,gzip-indexes,no-languages},no-check-valid-until} $FILESYSTEM_ROOT/etc/apt/apt.conf.d/
-sudo LANG=C chroot $FILESYSTEM_ROOT bash -c 'apt-mark auto `apt-mark showmanual`'
 
 ## Note: set lang to prevent locale warnings in your chroot
 sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y update