icinga2: change to qemu build helper

srcpkgs/icinga2/template

@@ -3,6 +3,7 @@ pkgname=icinga2
 version=2.9.3
 revision=1
 build_style=cmake
+build_helper="qemu"
 configure_args="-DCMAKE_INSTALL_SYSCONFDIR=/etc
  -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DICINGA2_RUNDIR=/run
  -DICINGA2_PLUGINDIR=/usr/lib/monitoring-plugins/"
@@ -24,10 +25,6 @@ system_accounts="icinga"
 system_groups="icingacmd"
 icinga_groups="icingacmd"
 
-if [ "$CROSS_BUILD" ]; then
-	hostmakedepends+=" qemu-user-static"
-fi
-
 post_install() {
 	vsv icinga2
 	# remove useless files