chore: remote todo.md

This file is from before our time and is explicitly stated as not
maintained.

The features suggested are mostly stale or implemented. There are some
we may consider resurrecting or keeping. They should instead be converted
to proper GitHub issues where people can take part of the planning
instead.

README.md

@@ -114,7 +114,7 @@ With `diffview` integration enabled
 | Keybinding | Function                             |
 | ---------- | ------------------------------------ |
 | d          | Open `diffview.nvim` at hovered file |
-| D (TODO)   | Open diff popup                      |
+| D          | Open diff popup                      |
 
 ## Configuration
 
@@ -373,14 +373,6 @@ augroup DefaultRefreshEvents
 augroup END
 ```
 
-## Todo
-
-**Note: This file is no longer being updated.**
-
-The todo file does not represent ALL of the missing features. This file just shows the features which I noticed were missing and I have to implement.
-
-[TODO](./todo.md)
-
 ## Testing
 
 Assure that you have [plenary.nvim](https://github.com/nvim-lua/plenary.nvim)