remove script that triggered now removed retest tests

rebar.config.script

@@ -1,17 +0,0 @@
-%% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
-%% ex: ts=4 sw=4 ft=erlang et
-
-ExtraDeps = [{retest, ".*", {git, "git://github.com/dizzyd/retest.git"}}],
-
-case os:getenv("REBAR_EXTRA_DEPS") of
-    false ->
-        CONFIG;
-    _ ->
-        case lists:keysearch(deps, 1, CONFIG) of
-            {value, {deps, Deps}} ->
-                NDeps = Deps ++ ExtraDeps,
-                lists:keyreplace(deps, 1, CONFIG, {deps, NDeps});
-            false ->
-                CONFIG ++ [{deps, ExtraDeps}]
-        end
-end.