fzf: don't source automatically

The removed lines are identical to enabling fish integration in home-manager/nixos thus the options cannot disable it.

pkgs/by-name/fz/fzf/package.nix

@@ -65,12 +65,6 @@ buildGoModule rec {
 
     # Install shell integrations
     install -D shell/* -t $out/share/fzf/
-    install -D shell/key-bindings.fish $out/share/fish/vendor_functions.d/fzf_key_bindings.fish
-    mkdir -p $out/share/fish/vendor_conf.d
-    cat << EOF > $out/share/fish/vendor_conf.d/load-fzf-key-bindings.fish
-      status is-interactive; or exit 0
-      fzf_key_bindings
-    EOF
 
     cat <<SCRIPT > $out/bin/fzf-share
     #!${runtimeShell}