test_pwpolicy: minlength parameter can be reset with empty string now

The reset of the minlength parameter failed with an internal error so
far. This has been fixed in IPA and therefore requires to fix the test
in ansible-freeipa also.

Related: https://pagure.io/freeipa/issue/9297

tests/pwpolicy/test_pwpolicy.yml

@@ -176,21 +176,10 @@
       minlength: ""
     register: result
     failed_when:
-        result.changed or
         (result.failed and not
          ("an internal error has occurred" in result.msg or
           "int() argument must be" in result.msg))
-    when: ipa_version is version("4.9", ">=")
-
-  - name: Ensure minlength is not cleared due to FreeIPA issue
-    ipapwpolicy:
-      ipaadmin_password: SomeADMINpassword
-      ipaapi_context: "{{ ipa_context | default(omit) }}"
-      name: ops
-      minlength: ""
-    register: result
-    failed_when: not result.changed or result.failed
-    when: ipa_version is version("4.7", "<")
+        or (not result.failed and not result.changed)
 
   - name: Execute tests if ipa_version >= 4.9.0
     when: ipa_version is version("4.9", ">=")