tmux: Remove completed TODO

Fixed: 7dcd00058f ("tmux:TODO: Do not modify selection when
scrolling")
Fixed-by: aa901099b0 ("tmux: Use C-[ey] for scrolling with the wheel")

.config/tmux/tmux.conf

@@ -91,7 +91,6 @@ bind -T copy-mode-vi MouseDown2Pane {
 # Scroll up 5 lines when entering copy-mode through the mouse wheel, send 5x`up`
 # when the current pane is in alternate mode and discard the `-e` flag passed to
 # copy-mode from the default binding (See below)
-# TODO: Do not modify selection when scolling with the wheel
 bind -n WheelUpPane {
 	if -F "#{||:#{pane_in_mode},#{mouse_any_flag}}" {
 		send -M