Remove post push hook

test/integration/docker/deployer/app/.mrsk/hooks/post-push

@@ -1,3 +0,0 @@
-#!/bin/sh
-echo "Built and pushed!"
-mkdir -p /tmp/${TEST_ID} && touch /tmp/${TEST_ID}/post-push

test/integration/integration_test.rb

@@ -84,7 +84,7 @@ class IntegrationTest < ActiveSupport::TestCase
     end
 
     def assert_hooks_ran
-      [ "pre-build", "post-push" ].each do |hook|
+      [ "pre-build" ].each do |hook|
         file = "/tmp/#{ENV["TEST_ID"]}/#{hook}"
         assert_match /File: #{file}/, deployer_exec("stat #{file}", capture: true)
       end