Improve CommandFramework Exception readability

SpigotCore_Main/src/de/steamwar/command/CommandFrameworkException.java

@@ -55,7 +55,6 @@ public class CommandFrameworkException extends RuntimeException {
         for (int i = 0; i < stackTraceElements.length - invocationTargetException.getStackTrace().length; i++) {
             st.append("\tat ").append(stackTraceElements[i].toString()).append("\n");
         }
-        st.append("\n");
         message = st.toString();
         return message;
     }