fish: revert to default prompt

fish/functions/fish_prompt.fish

@@ -1,29 +0,0 @@
-function fish_prompt --description 'Write out the prompt'
-    # Save status code for previous command
-    set -l last_status $status
-
-    # If we're running via SSH, display the hostname
-    if set -q SSH_TTY
-        set_color $fish_color_host_remote
-        echo -n "$hostname "
-        set_color normal
-    end
-
-    # Print working directory
-    set_color $fish_color_cwd
-    echo -n (prompt_pwd)
-    set_color normal
-
-    # Print git information
-    printf '%s ' (__fish_git_prompt)
-
-    # Print status code for previous command, if nonzero
-    if not test $last_status -eq 0
-        set_color $fish_color_error
-        echo -n "[$last_status] "
-        set_color normal
-    end
-
-    # Print the final character
-    echo -n "> "
-end