Revert "gnu: lxqt-admin: Fix path for timezone file."

The timezone database should not be depended on by packages, but rather found at
runtime in the environment. Otherwise, this package will eventually report the
incorrect time, because time zones change regularly.

This reverts commit 99c1c7a30c.

gnu/packages/lxqt.scm

@@ -39,7 +39,6 @@ (define-module (gnu packages lxqt)
   #:use-module (guix build-system trivial)
   #:use-module (gnu packages)
   #:use-module (gnu packages admin)
-  #:use-module (gnu packages base)
   #:use-module (gnu packages compression)
   #:use-module (gnu packages documentation)
   #:use-module (gnu packages compton)
@@ -321,8 +320,7 @@ (define-public lxqt-admin
            libqtxdg
            polkit-qt
            qtsvg-5
-           qtx11extras
-           tzdata))
+           qtx11extras))
     (native-inputs
      (list lxqt-build-tools qttools-5))
     (arguments
@@ -330,14 +328,12 @@ (define-public lxqt-admin
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'patch-source
-           (lambda* (#:key inputs #:allow-other-keys)
+           (lambda _
              (substitute* '("lxqt-admin-user/CMakeLists.txt"
                             "lxqt-admin-time/CMakeLists.txt")
                (("DESTINATION \"\\$\\{POLKITQT-1_POLICY_FILES_INSTALL_DIR\\}")
                 "DESTINATION \"share/polkit-1/actions"))
-             (substitute* '("lxqt-admin-time/timeadmindialog.cpp")
-               (("/usr/share/zoneinfo/zone.tab")
-                (search-input-file inputs "share/zoneinfo/zone.tab"))))))))
+             #t)))))
     (home-page "https://lxqt-project.org")
     (synopsis "LXQt system administration tool")
     (description "lxqt-admin is providing two GUI tools to adjust settings of