[web] Delete XMPP references from langfiles (#4338)

* [Web] Update lang.en.json

* [Web] Update lang.it.json

* [Web] Update lang.nl.json

* [Web] Update lang.ro.json

* [Web] Update lang.ru.json

* [Web] Update lang.sk.json

* [Web] Update lang.sv.json

data/web/lang/lang.en.json

@@ -489,9 +489,7 @@
         "success": "Success",
         "system_containers": "System & Containers",
         "uptime": "Uptime",
-        "username": "Username",
-        "xmpp_dead": "XMPP is starting, disabled or died.",
-        "xmpp_status": "XMPP status"
+        "username": "Username"
     },
     "diagnostics": {
         "cname_from_a": "Value derived from A/AAAA record. This is supported as long as the record points to the correct resource.",
@@ -615,16 +613,7 @@
         "title": "Edit object",
         "unchanged_if_empty": "If unchanged leave blank",
         "username": "Username",
-        "validate_save": "Validate and save",
-        "xmpp": "Activate XMPP for this domain",
-        "xmpp_access": "XMPP access",
-        "xmpp_access_info": "XMPP must be enabled for this domain.",
-        "xmpp_admin": "XMPP administrator",
-        "xmpp_admin_info": "<b>Danger:</b> Promotes a user to an XMPP administrator of this domain.",
-        "xmpp_example_jid": "<b>Example JID</b> (login with mailbox password)",
-        "xmpp_info": "This function will enable chat functionality for this domain.",
-        "xmpp_prefix": "XMPP prefix for domain (\"im\" to use <b>im</b>.example.org)",
-        "xmpp_prefix_info": "To request certificates for XMPP, two CNAME DNS records should point from <b>im</b>.example.org as well as <b>*.im</b>.example.org to <b>%s</b>. Please also run the DNS check for this domain after enabling XMPP."
+        "validate_save": "Validate and save"
     },
     "fido2": {
         "confirm": "Confirm",
@@ -990,10 +979,7 @@
         "verified_fido2_login": "Verified FIDO2 login",
         "verified_totp_login": "Verified TOTP login",
         "verified_u2f_login": "Verified U2F login",
-        "verified_yotp_login": "Verified Yubico OTP login",
-        "xmpp_maps_updated": "XMPP maps were updated",
-        "xmpp_reloaded": "XMPP service was reloaded",
-        "xmpp_restarted": "XMPP service was restarted"
+        "verified_yotp_login": "Verified Yubico OTP login"
     },
     "tfa": {
         "api_register": "%s uses the Yubico Cloud API. Please get an API key for your key <a href=\"https://upgrade.yubico.com/getapikey/\" target=\"_blank\">here</a>",