Drop patch needed for unmerged /usr

debian/patches/debian/2021-02-10.build-on-non-usrmerge.patch

@@ -1,26 +0,0 @@
-Subject: Adjust build for non-usrmerged systems
-Author: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
-Date: 2020-12-29
-Bug-Debian: https://bugs.debian.org/993246
-Forwarded: not-needed
-Last-Update: 2021-08-30
-
-    Was previously part of
-    cherry-pick/1606953228.v15-5-g9cdd041.systemd-drop-ncat-dependency.patch
-
-    The legacy path /lib should be the first in the list, else the
-    package will not build reproducibly between usrmerged/unmerged build
-    environments.
-
-    This patch can be removed once unmerged /usr is no longer supported.
-
---- a/src/luks/systemd/meson.build
-+++ b/src/luks/systemd/meson.build
-@@ -1,6 +1,7 @@
- systemd = dependency('systemd', required: false)
- 
- sd_reply_pass = find_program(
-+  join_paths('/', 'lib', 'systemd', 'systemd-reply-password'),
-   join_paths(get_option('prefix'), get_option('libdir'), 'systemd', 'systemd-reply-password'),
-   join_paths(get_option('prefix'), 'lib', 'systemd', 'systemd-reply-password'),
-   join_paths('/', 'usr', get_option('libdir'), 'systemd', 'systemd-reply-password'),

debian/patches/series

@@ -6,4 +6,3 @@ for-upstream/2020-05-21.embed-more-programs-in-initram.patch
 
 # patches for Debian
 debian/2020-05-21.set-unprivileged-user.patch
-debian/2021-02-10.build-on-non-usrmerge.patch