package/pkg-qmake.mk: drop host-perl dependency
Since commit 5770a645a3a49a3f0f02972131a4ff5283b4c11e ("package/qt5:
bump packages to latest kde submodule versions"), the
QT_HEADERS_SYNC_HOOK hook no longer calls the syncqt.pl script, so
host-perl is no longer needed as a dependency of running this
hook (and as a dependency of building Qt).
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>