fix(mise)!: remove unneeded hook-env call (#13491)

BREAKING CHANGE: Backwards compatibility for `rtx` has been removed.
Please migrate to `mise` if you are affected by this change.

plugins/mise/mise.plugin.zsh

@@ -1,27 +1,17 @@
-# TODO: 2024-01-03 remove rtx support
-local __mise=mise
 if (( ! $+commands[mise] )); then
-  if (( $+commands[rtx] )); then
-    __mise=rtx
-  else
-    return
-  fi
+  return
 fi
 
 # Load mise hooks
-eval "$($__mise activate zsh)"
-
-# Hook mise into current environment
-eval "$($__mise hook-env -s zsh)"
+eval "$(mise activate zsh)"
 
 # If the completion file doesn't exist yet, we need to autoload it and
 # bind it to `mise`. Otherwise, compinit will have already done that.
-if [[ ! -f "$ZSH_CACHE_DIR/completions/_$__mise" ]]; then
+if [[ ! -f "$ZSH_CACHE_DIR/completions/_mise" ]]; then
   typeset -g -A _comps
-  autoload -Uz _$__mise
-  _comps[$__mise]=_$__mise
+  autoload -Uz _mise
+  _comps[mise]=_mise
 fi
 
 # Generate and load mise completion
-$__mise completion zsh >| "$ZSH_CACHE_DIR/completions/_$__mise" &|
-unset __mise
+mise completion zsh >| "$ZSH_CACHE_DIR/completions/_mise" &|