Symbol's value as variable is void: org-evil-block-mode

Got the following error on a fresh install:

```
Warning (initialization): An error occurred while loading '~/.emacs.d/init.el’:

Symbol's value as variable is void: org-evil-block-mode

To ensure normal operation, you should investigate and remove the
cause of the error in your initialization file.  Start Emacs with
the ‘--debug-init’ option to view a complete error backtrace.
```