Remove 'proxied' field from sans.json

Removed 'proxied' field from the records in sans.json.

domains/sans.json

@@ -5,10 +5,10 @@
     },    
     "records": {
         "CNAME": "bricksarecool.github.io",
-        "proxied": true,
         "MX": [
           "mx1.improvmx.com.",
           "mx2.improvmx.com."
-        ]
+        ],
+        "TXT": ["v=spf1 include:spf.improvmx.com ~all"]
     }
 }