ipatests: remove redundant kinit from test

Fixture issue_and_expire_cert() kinit after moving the date to
expire certs. This fix is to rely on kinit from fixture.

Signed-off-by: Mohammad Rizwan <myusuf@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>

ipatests/test_integration/test_acme.py

@@ -585,7 +585,7 @@ class TestACMERenew(IntegrationTest):
         # Note raiseonerr=False:
         # the assert is located after kdcinfo retrieval.
         result = host.run_command(
-            "KRB5_TRACE=/dev/stdout kinit %s" % 'admin',
+            "KRB5_TRACE=/dev/stdout kinit admin",
             stdin_text='{0}\n{0}\n{0}\n'.format(
                 self.clients[0].config.admin_password
             ),
@@ -619,8 +619,6 @@ class TestACMERenew(IntegrationTest):
         cert = x509.load_pem_x509_certificate(data, backend=default_backend())
         initial_expiry = cert.not_valid_after
 
-        tasks.kinit_admin(self.clients[0])
-
         self.clients[0].run_command(['certbot', 'renew'])
 
         data = self.clients[0].get_file_contents(