Remove last trace of licheck

Since we don't feature it for CMake, there's little point in keeping it
for qmake.

Pick-to: 6.1
Change-Id: I7f17d2536510c0b94dca9767036ceab7ec08e1d8
Reviewed-by: Tino Pyssysalo <tino.pyssysalo@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

mkspecs/features/default_pre.prf

@@ -11,19 +11,4 @@ CONFIG = \
     testcase_targets import_plugins import_qpa_plugin \
     $$CONFIG
 
-!build_pass:!isEmpty(QT_LICHECK):!QTDIR_build {
-    #
-    # call license checker (but cache result for one day)
-    #
-    today = $$section(_DATE_, " ", 0, 2)
-    !isEqual(QMAKE_LICHECK_TIMESTAMP, $$today) {
-        !system("$$system_quote($$system_path($$[QT_HOST_BINS/src]/$$QT_LICHECK)) check" \
-                "$$QT_RELEASE_DATE $$[QMAKE_SPEC] $$[QMAKE_XSPEC]"): \
-            error("License check failed! Giving up ...")
-
-        cache(QMAKE_LICHECK_TIMESTAMP, set stash, today)
-    }
-    unset(today)
-}
-
 load(toolchain)