hide not-yet-working pw expiration email template

server/src/main/resources/password/pwm/config/PwmSetting.xml

@@ -820,7 +820,7 @@
             <value>{"to":"@User:Email@","from":"Unlock Account Notice \u003c@DefaultEmailFromAddress@\u003e","subject":"Account Unlock Notice","bodyPlain":"Your account has been unlocked.","bodyHtml":""}</value>
         </default>
     </setting>
-    <setting hidden="false" key="email.pwExpirationNotice" level="1">
+    <setting hidden="true" key="email.pwExpirationNotice" level="1">
         <flag>MacroSupport</flag>
         <default>
             <value>{"to":"@User:Email@","from":"Password Expiration Notice \u003c@DefaultEmailFromAddress@\u003e","subject":"Password Expiration Notice","bodyPlain":"Your password is about to expire.  Your password will expire in @User:DaysUntilPwExpire@ days.","bodyHtml":""}</value>