removes python requirement to script

mistakenly added when checksum was made to use stat module
fixed assertion in test

test/integration/roles/test_script/tasks/main.yml

@@ -66,4 +66,4 @@
 - name: assert that the file was removed by the script
   assert:
     that:
-      - "script_result1.changed != True"
+      - "script_result1|changed"