removing the exception in case there is an error to delete the network

#### Reviewers
@jframos @jesuspg

#### Description
https://jira.tid.es/browse/CLAUDIA-4271
#### Test
Tested locally agains experimentacion testbed
I prefer more structured and OOP coding:

                    for (ProductRelease pRelease : productReleases) {
                        if (pRelease != null) {                        
                            ProductRelease pReleaseDB = productReleaseManager.load(
                                pRelease.getProduct() + "-" + pRelease.getVersion(), claudiaData);
                            pReleaseDB = updateProductReleaseDB(pReleaseDB, pRelease);
                            pReleaseDB = productReleaseManager.update(pReleaseDB);
                            pReleases.add(pReleaseDB);
                        }
                    }