fish: functions/fish_prompt: Drop virtualfish

It increases the load time which is just annoying. Fuck Python
anyways.

fish/.config/fish/conf.d/virtualfish-loader.fish

@@ -1,4 +0,0 @@
-set -g VIRTUALFISH_VERSION 2.5.4
-set -g VIRTUALFISH_PYTHON_EXEC /usr/bin/python
-source /usr/lib/python3.10/site-packages/virtualfish/virtual.fish
-emit virtualfish_did_setup_plugins

fish/.config/fish/functions/fish_prompt.fish

@@ -86,8 +86,4 @@ function fish_prompt
     if set -q SSH_TTY
         set -g fish_color_host brred
     end
-
-    if set -q VIRTUAL_ENV
-        echo -n -s (set_color -b blue white) "(" (basename "$VIRTUAL_ENV") ")" (set_color normal) " "
-    end
 end