Fixing the signature of method

Correcting the signature of method _get_free_floating_ip in vimconn_openstack.py

Change-Id: I0351b1c9af9543c02985601a30fe1e684db71e8a
Signed-off-by: Gulsum Atici <gulsum.atici@canonical.com>
diff --git a/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py b/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
index 3d5eb77..2de443c 100644
--- a/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
+++ b/RO-VIM-openstack/osm_rovim_openstack/vimconn_openstack.py
@@ -2305,14 +2305,13 @@
         return self.neutron.show_floatingip(free_floating_ip)
 
     def _get_free_floating_ip(
-        self, server: object, floating_network: dict, created_items: dict
+        self, server: object, floating_network: dict
     ) -> Optional[str]:
         """Get the free floating IP address.
 
         Args:
             server  (object):               Server Object
             floating_network    (dict):     Floating network details
-            created_items   (dict):         All created items belongs to new VM instance
 
         Returns:
             free_floating_ip    (str):      Free floating ip addr
@@ -2324,9 +2323,7 @@
         # Randomize
         random.shuffle(floating_ips)
 
-        return self._find_floating_ip(
-            server, floating_ips, floating_network, created_items
-        )
+        return self._find_floating_ip(server, floating_ips, floating_network)
 
     def _prepare_external_network_for_vminstance(
         self,
@@ -2356,7 +2353,7 @@
                 while not assigned:
 
                     free_floating_ip = self._get_free_floating_ip(
-                        server, floating_network, created_items
+                        server, floating_network
                     )
 
                     if not free_floating_ip: