Remove nisse from call/OWNERS

Bug: None
Change-Id: Ic7b86ce4fd0c694f62e6dd4243c571a486f4a34d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170049
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30741}
diff --git a/call/OWNERS b/call/OWNERS
index f8dcd9f..ac83ebb 100644
--- a/call/OWNERS
+++ b/call/OWNERS
@@ -1,4 +1,3 @@
 mflodman@webrtc.org
-nisse@webrtc.org
 stefan@webrtc.org
 srte@webrtc.org