core/src/main/java/com/orientechnologies/orient/core/record/ORecordAbstract.java
protected void removeListener(final ORecordListener listener) {
    if (_listeners != null) {
      _listeners.remove(listener);
      if (_listeners.isEmpty())
        _listeners = null;
    }
  }
protected void removeListener(final ORecordListener listener) {
    if (_listeners != null) {
      _listeners.remove(listener);
      if (_listeners.isEmpty())
        _listeners = null;
    }
  }
protected void removeListener ( final ORecordListener listener ) { if ( _listeners != null ) { _listeners . remove ( listener ) ; if ( _listeners . isEmpty ( ) ) _listeners = null ; } }
Remove the current event listener.

@see ORecordListener
Remove the current event listener .