[zsh] handle global ruby version not in zsh
diff --git a/.zshrc b/.zshrc
index 9d79e56d..d7267108 100644
--- a/.zshrc
+++ b/.zshrc
@@ -222,9 +222,6 @@ setopt auto_menu # require an extra TAB press to open the completion menu
# https://github.com/romkatv/zsh4humans/issues/110#issuecomment-846824056
[[ ! -v functions[command_not_found_handler] ]] || unfunction command_not_found_handler
-# default to ruby 3.3
-which chruby &>/dev/null && chruby 3.4
-
for file in ~/.config/zsh/*(N); z4h source $file
[ -z "$ZPROF" ] || zprof