temp: remove NetBSD, we need NetBSD 11 for a recent OpenSSL.

Author: ThomasWaldmann

.github/workflows/ci.yml

@@ -285,11 +285,6 @@ jobs:
             do_binaries: true
             artifact_prefix: borg-freebsd-15-x86_64-gh
 
-          - os: netbsd
-            version: '10.1'
-            display_name: NetBSD
-            do_binaries: false
-
           - os: openbsd
             version: '7.8'
             display_name: OpenBSD