[fish] Clean up fish config files

fish/.config/fish/config.fish

@@ -10,5 +10,7 @@ set -gx PATH ~/.asdf/installs/rust/latest/bin $PATH
 fzf_key_bindings
 set -gx EDITOR vi
 set -gx XDG_RUNTIME_DIR /run/user/(id -u)
+set -gx FZF_LEGACY_KEYBINDS 0
+set -gx FZF_COMPLETE 1
 direnv hook fish | source
 alias ls=exa