Simple answer is YES, but many guys thinks why it there? what it does? There is no reason given by creator of wordpress ever, but there are many speculations about it. Most of people thinks that it is just matter of emotion as Dolly Plugin is very first wordpress plugin developed by Matt Mullenweg, co-founder of WordPress.
Interestingly, however it does nothing and removing it from website won’t make any effect but still lot’s of people downloading it :). There are few very interesting facts that taken from Hello Dolly plugin page as on 5 October 2016 are:
- Today 36 people downloaded it
- 600,647 all time downloads
- Last Updated 2 months ago (they are still working on it to make it better LOL)
- Active Installs (1+ million)
Let me share few screenshots of above data:
Keeping this plugin in wordpress install is your decision but one thing be sure that it is absolutely safe in both cases whether you keep it or delete it.