refactor(known_hosts_real): clean up old IFS/noglob workarounds

Author: akinomyoga

bash_completion

@@ -2398,9 +2398,6 @@ _known_hosts_real()
         done
     fi
 
-    local IFS=$' \t\n' reset=$(shopt -po noglob)
-    set -o noglob
-
     # "Include" keyword in ssh config files
     if ((${#config[@]} > 0)); then
         for i in "${config[@]}"; do
@@ -2530,8 +2527,6 @@ _known_hosts_real()
         _comp_compgen -a -- -A hostname -P "$prefix" -S "$suffix"
     fi
 
-    $reset
-
     if ((${#COMPREPLY[@]})); then
         if [[ $ipv4 ]]; then
             COMPREPLY=("${COMPREPLY[@]/*:*$suffix/}")