vim: Drop <leader>zc mapping
vim: Drop <leader>zc mapping

Instead of this using:

```
:read !git shortlog -s|cut -f 2-3|column -c 72
:retab " after selecting region, then indent with gv>>
```

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent