Closes a buffered reader in saveStateTest properly and removes a .close causing server consoles not to display text

src/main/java/net/knarcraft/minecraftserverlauncher/utility/CommonFunctions.java

@@ -200,7 +200,6 @@ public final class CommonFunctions {
         while (reader.ready() && (line = reader.readLine()) != null) {
             text.append(line).append("\n");
         }
-        reader.close();
         return text.toString().trim();
     }