Revert "Switch heretic skin to new profile system"

This reverts commit 1442669e.

indra/newview/skins/heretic/skin_settings.xml

-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <llsd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:noNamespaceSchemaLocation="llsd.xsd">
 	<map>
+		<key>LegacyProfile</key>
+		<map>
+			<key>Comment</key>
+			<string>Use Legacy Profiles rather than standard</string>
+			<key>Persist</key>
+			<integer>0</integer>
+			<key>HideFromEditor</key>
+			<integer>1</integer>
+			<key>Type</key>
+			<string>Boolean</string>
+			<key>Value</key>
+			<boolean>1</boolean>
+		</map>
 		<key>LegacyNotificationWell</key>
 		<map>
 			<key>Comment</key>