GUACAMOLE-1612: Update and correct Italian Translations for Guacamole Client

extensions/guacamole-auth-sso/modules/guacamole-auth-sso-base/src/main/resources/translations/it.json

@@ -1,21 +1,6 @@
 {
 
-    "DATA_SOURCE_CAS" : {
-        "NAME" : "CAS SSO Backend"
-    },
-
-    "DATA_SOURCE_OPENID" : {
-        "NAME" : "OpenID SSO Backend"
-    },
-
-    "DATA_SOURCE_SAML" : {
-        "NAME" : "SAML SSO Backend"
-    },
-
     "LOGIN" : {
-        "FIELD_HEADER_ID_TOKEN"      : "",
-        "FIELD_HEADER_STATE"         : "",
-        "FIELD_HEADER_TICKET"        : "",
         "INFO_IDP_REDIRECT_PENDING"  : "Attendi, reindirizzamento al provider di identità...",
         "NAME_IDP_CAS"               : "CAS",
         "NAME_IDP_OPENID"            : "OpenID",