feat(snippets): init mint_system.mail.mail_notification_layout.remove_header_and_footer

snippets/mint_system.mail.mail_notification_layout.remove_header_and_footer.xml

@@ -0,0 +1,9 @@
+<data priority="60">
+    <xpath expr="//t[@t-set='show_header']" position="replace">
+        <t t-set="show_header" t-value="False" />
+    </xpath>
+    <xpath expr="//t[@t-set='show_footer']" position="replace">
+        <t t-set="show_footer" t-value="False" />
+    </xpath>
+</data>
+