Comment # 5 on bug 1212853 from Eyad Issa

Ok so:

- removing the swap partition
- removing the entry from /etc/crypttab and /etc/fstab
- running dracut -f to re-create the initramfs

I'm not asked two passwords anymore. Just the bootloader one.

So the conclusion is that the second password was asked because the swap was on
a different LUKS partition.

I don't know why the setup creates two partitions by default.

I will add a note on the wiki.