remove condition for associated network when !specifyvlan in shared network

Author: DaanHoogland

server/src/main/java/com/cloud/network/NetworkServiceImpl.java

@@ -1635,10 +1635,6 @@ public Network createGuestNetwork(CreateNetworkCmd cmd) throws InsufficientCapac
             throwInvalidIdException("Network offering with specified id doesn't support adding multiple ip ranges", ntwkOff.getUuid(), NETWORK_OFFERING_ID);
         }
 
-        if (GuestType.Shared == ntwkOff.getGuestType() && !ntwkOff.isSpecifyVlan() && Objects.isNull(associatedNetworkId)) {
-            throw new CloudRuntimeException("Associated network must be provided when creating Shared networks when specifyVlan is false");
-        }
-
         Pair<Integer, Integer> interfaceMTUs = validateMtuConfig(publicMtu, privateMtu, zone.getId());
         mtuCheckForVpcNetwork(vpcId, interfaceMTUs, publicMtu);