use pax-utils package instead of building

prebuild/Linux/bundle.sh

@@ -1,8 +1,8 @@
 set -ex
 
-copies=$(lddtree.sh -l build/Release/canvas.node | sed -r -e '/^\/lib/d' -e '/canvas.node$/d');
+apt install -y patchelf pax-utils
 
-apt install -y patchelf
+copies=$(lddtree.sh -l build/Release/canvas.node | sed -r -e '/^\/lib/d' -e '/canvas.node$/d');
 
 for so in $copies; do
   cp $so build/Release

prebuild/Linux/preinstall.sh

@@ -1,14 +1,3 @@
 # apt-get-style dependencies aren't done here since the
 # linux build is done on a docker image that has them
 
-# ... except for libseccomp, which could go in the docker image, but for now I
-# don't want to rebuild it.
-apt-get install -y libseccomp2 libseccomp-dev
-
-git clone git://anongit.gentoo.org/proj/pax-utils.git
-cd pax-utils
-# the last commit before they changed from make to meson
-git checkout d9f65269d7182ef1d313e3b87bcea37e45958561
-PATH=$PATH:$PWD
-make
-cd ..