chromium: remove redundant sed -i for libudev.so

This sed is a no-op since [CL 5738848], which reached chromium stable
as part of M129 back in September 2024.

Electron 32, which was based on M128, reached EOL in March 2025.

As such, this can be safely removed without the need of a version
conditional.

[CL 5738848]: https://chromium-review.googlesource.com/c/chromium/src/+/5738848

pkgs/applications/networking/browsers/chromium/common.nix

@@ -686,10 +686,6 @@ let
             '${glibc}/share/locale/'
 
       ''
-      + lib.optionalString systemdSupport ''
-        sed -i -e '/lib_loader.*Load/s!"\(libudev\.so\)!"${lib.getLib systemd}/lib/\1!' \
-          device/udev_linux/udev?_loader.cc
-      ''
       + ''
         # Allow to put extensions into the system-path.
         sed -i -e 's,/usr,/run/current-system/sw,' chrome/common/chrome_paths.cc