Fix Node NumberFormatException

src/de/steamwar/bungeecore/Node.java

@@ -194,9 +194,6 @@ public abstract class Node {
             } catch (IOException | NumberFormatException e) {
                 BungeeCore.get().getLogger().log(Level.SEVERE, "Could not read cores of" + remote, e);
                 c = 1;
-            } catch (NumberFormatException e) {
-                BungeeCore.get().getLogger().log(Level.SEVERE, "Could not read cores of" + remote, e);
-                c = 1;
             }
             cores = c;
             BungeeCore.get().getLogger().log(Level.INFO, "Adding node " + remote + " with " + cores + " cores.");