settings: Protocols is empty by default

Author: cmouse

data/settings.js

@@ -9688,7 +9688,7 @@ process_shutdown_filter = "event=mail_user_session_finished AND rss > 10M"
 	},
 
 	protocols: {
-		default: 'imap pop3 lmtp',
+		default: '',
 		values: setting_types.BOOLLIST,
 		text: `
 The list of protocols to enable.
@@ -9704,7 +9704,7 @@ protocols {
   lmtp = yes
 }
 
-# Disable all protocols:
+# Disable all protocols (default):
 protocols =
 \`\`\``
 	},