`fd` ignores hidden directories by default

[chriserin]

https://github.com/dkarter/dotfiles/blob/bfb451ae405caee16b33f241b8aa252f5600fc6e/config/nvim/lua/plugins/telescope.lua#L56,57

I believe these lines can be removed.

In the fd README it says:

Ignores hidden directories and files, by default.

And in the subsequent demo it shows that you can find files in the .git directory by passing the --hidden flag.