fixed exception name

src/main/java/org/gcube/informationsystem/publisher/stubs/registry/CollectorStubs.java

@@ -95,7 +95,7 @@ public class CollectorStubs implements RegistryStub {
 			}
 		}catch (ResourceDoesNotExistException | RemoveException e) {
 			throw e;
-		}catch (Exception e) {
+		}catch (Exception e1) {
 			throw new RemoveException("connection error removing resource");
 		}
 	}