Revert "add POWERLEVEL9K_DEBUG_DUMP_STATE to aid in debugging #244"

This reverts commit 55a27c1f07.

internal/p10k.zsh

@@ -3359,10 +3359,6 @@ _p9k_save_status() {
 
 function _p9k_dump_state() {
   is-at-least 5.4 || return  # `typeset -g` doesn't roundtrip in zsh prior to 5.4.
-  if [[ $POWERLEVEL9K_DEBUG_DUMP_STATE == true && -z $__p9k_debug_dump_state ]]; then
-    __p9k_debug_dump_state=done
-    setopt xtrace
-  fi
   local dir=${__p9k_dump_file:h}
   [[ -d $dir ]] || mkdir -pm 0700 $dir || return
   [[ -w $dir ]] || return