cloudstack: cs_instance: revert VPC support (#22629)

Partly reverts 5374c7cd09

lib/ansible/modules/cloud/cloudstack/cs_instance.py

@@ -198,12 +198,6 @@ options:
       - Consider switching to HTTP_POST by using C(CLOUDSTACK_METHOD=post) to increase the HTTP_GET size limit of 2KB to 32 KB.
     required: false
     default: null
-  vpc:
-    description:
-      - Name of the VPC.
-    required: false
-    default: null
-    version_added: "2.3"
   force:
     description:
       - Force stop/start the instance if required to apply changes, otherwise a running instance will not be changed.
@@ -524,22 +518,16 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
         instance = self.instance
         if not instance:
             instance_name = self.get_or_fallback('name', 'display_name')
-            vpc_id = self.get_vpc(key='id')
             args = {
                 'account': self.get_account(key='name'),
                 'domainid': self.get_domain(key='id'),
                 'projectid': self.get_project(key='id'),
-                'vpcid': vpc_id,
             }
             # Do not pass zoneid, as the instance name must be unique across zones.
             instances = self.cs.listVirtualMachines(**args)
             if instances:
                 for v in instances['virtualmachine']:
-                    # Due the limitation of the API, there is no easy way (yet) to get only those VMs
-                    # not belonging to a VPC.
-                    if not vpc_id and self.is_vm_in_vpc(vm=v):
-                        continue
-                    if instance_name.lower() in [ v['name'].lower(), v['displayname'].lower(), v['id'] ]:
+                    if instance_name.lower() in [v['name'].lower(), v['displayname'].lower(), v['id']]:
                         self.instance = v
                         break
         return self.instance
@@ -636,7 +624,6 @@ class AnsibleCloudStackInstance(AnsibleCloudStack):
             'domainid': self.get_domain(key='id'),
             'projectid': self.get_project(key='id'),
             'zoneid': self.get_zone(key='id'),
-            'vpcid': self.get_vpc(key='id'),
         }
         networks = self.cs.listNetworks(**args)
         if not networks:
@@ -1017,7 +1004,6 @@ def main():
         ssh_key = dict(default=None),
         force = dict(type='bool', default=False),
         tags = dict(type='list', aliases=[ 'tag' ], default=None),
-        vpc = dict(default=None),
         poll_async = dict(type='bool', default=True),
     ))