[clean] Remove useless IFS save

bin/blackbox_update_all_files

@@ -18,8 +18,6 @@ fi
 disclose_admins
 prepare_keychain
 
-OLDIFS=$IFS
-
 echo '========== ENCRYPTED FILES TO BE RE-ENCRYPTED:'
 while IFS= read <&99 -r unencrypted_file; do
     echo "    $unencrypted_file.gpg"
@@ -62,8 +60,6 @@ while IFS= read <&99 -r unencrypted_file; do
 done 99<"$BB_FILES"
 vcs_commit 'Re-encrypted keys'
 
-IFS=$OLDIFS
-
 VCSCMD=$(which_vcs)
 echo '========== DONE.'
 echo 'Likely next step:'