[post_sfos-upgrade] Omit incorrect quoting

bin/post_sfos-upgrade

@@ -54,7 +54,7 @@ primuser="$(loginctl list-sessions | fgrep seat0 | tr -s ' ' | cut -d ' ' -f 4)"
 # Paths for SailfishOS ≥ 2.2.1 rsp. SailfishOS < 2.2.1, see chapter "Final clean up" at https://docs.sailfishos.org/Support/Help_Articles/Updating_Sailfish_OS/#final-clean-up
 rm -f "/home/${primuser}/.cache/sailfish-osupdateservice/os-info" "/home/${primuser}/.cache/store-client/os-info"
 
-printf '%s\n' "- Cleansing ssu(d)\'s caches and restarting it."
+printf '%s\n' "- Cleansing ssu(d)'s caches and restarting it."
 for i in -TERM -INT -TERM -HUP -KILL -Failed_to_kill_ssud
 do
   if pgrep -x ssud > /dev/null