`cursor(-1, -1)` not supported in recent vim versions

[gburger11]

The cursor(-1, -1) call seems to not be supported by the most recent versions of vim. This raises an exception: Invalid argument: -1. I couldn't find exactly what this command was meant to do in previous versions of vim. However, the plugin seems to work just fine for Vertical b and Vertical f if this line is removed, but I may have missed corner cases

Tested on neovim version 0.9.5.