Disable escriptize build hook

When building the cuttlefish library as a dependency through `mix`, the
build fails when attempting to run the `escriptize` hook.

Comment the hook out to make building with `mix` work.

The problem has been mentioned on the [Elixir forum][1], and technical
discussion can be found [on Github][2].

  [1]: https://elixirforum.com/t/erlang-dependency-doesnt-compile-with-mix/7043
  [2]: erlang/rebar3#1568

rebar.config

@@ -11,7 +11,14 @@
 {escript_incl_apps, [goldrush, getopt, lager, cuttlefish]}.
 {escript_main_app, cuttlefish}.
 
-{provider_hooks, [{post, [{compile, {default, escriptize}}]}]}.
+% The following hook breaks compilation through `mix`.
+% Commenting out for compatibility.
+%
+% See the following thread for more information:
+%
+%   https://github.com/erlang/rebar3/issues/1568
+
+% {provider_hooks, [{post, [{compile, {default, escriptize}}]}]}.
 
 {eunit_opts, [verbose]}.
 {cover_enabled, true}.