Remove unneeded packages from the root.tar.{gz,xz} cloud image targets

(LP: #1534764).

debian/changelog

@@ -1,7 +1,7 @@
 livecd-rootfs (2.371) xenial; urgency=medium
 
   * Remove unneeded packages from the root.tar.{gz,xz} cloud image targets
-    (LP: #1534765).
+    (LP: #1534764).
 
  -- utlemming Howard <utlemming.howard@ubuntu.com>  Sun, 17 Jan 2016 01:04:09 +0100
 

live-build/ubuntu-cpc/hooks/999-extras.binary

@@ -11,8 +11,5 @@ fi
 # Export the common functions to the extras
 . /build/config/functions
 
-# Execute extra binary hooks
-for recipe in $(find ${extra_d} -type f -executable -maxdepth 1);
-do
-    bash -xue ${recipe}
-done
+# Cleaner execution
+/bin/run-parts ${extra_d}