What happens to applied patches when/after upgrade?

[CDuv]

I've upgraded my pfSense from v2.0.1 to v2.1 and I'm wondering about what happens to patches I had applied (via System Patches) when running under 2.0.1.

For an issue on multiWAN (cf. this topic) I had been suggested to apply the patch 6fbe0168416bdb5d410cb36fdf531b317d3e072a. According to GitHub, patch has been merged into branch 2.1 so now that I have upgraded pfSense to v2.1 I should need it anymore.

Currently, my "/system_patches.php" shows:

Description: #2157: Changing relayd settings in system_advanced_misc.php does not trigger relayd config update/reload
URL/ID: http://github.com/bsdperimeter/pfsense/commit/6fbe0168416bdb5d410cb36fdf531b317d3e072a.patch
Fetch: Re-Fetch
Test: Test
Apply:
Revert: Revert
Auto Apply: No

I'm not sure if patch is still applied or if it has detected it's became useless now that I'm on v2.1.
Can I simply delete it? Is there some backward code changes I have to do?

Thanks.

[doktornotor]

Just delete it.

[CDuv]

Thanks :)