Fix the previous apt list removal hook. This hook needs to be .binary as otherwise we're still left with apt lists when the image is published.

live-build/ubuntu-touch/hooks/99-remove-lists.binary

@@ -5,5 +5,5 @@
 # Author: Łukasz 'sil2100' Zemczak <achiang@canonical.com>
 # Date  : September 22, 2015
 
-echo "Removing /var/lib/apt/lists/*"
-find /var/lib/apt/lists/ -type f | xargs rm -f
+echo "Removing /var/lib/apt/lists/* from the binary"
+find binary/boot/filesystem.dir/var/lib/apt/lists/ -type f | xargs rm -f