devel/libvirt: drop unused Meson options after e033068055

meson.build:1:0: ERROR: Unknown options: "dbus, hal"

https://gitlab.com/libvirt/libvirt/-/commit/cf6cc86cd217
https://gitlab.com/libvirt/libvirt/-/commit/de3289e2b538

PR:		259080
Reported by:	antoine (via exp-run)
Regressed by:	https://github.com/mesonbuild/meson/commit/dbf2ace6ca1c

devel/libvirt/Makefile

@@ -77,9 +77,7 @@ VARDIR=		/var
 
 MESON_ARGS+=	\
 		-Ddriver_remote=enabled \
-		-Ddbus=disabled \
 		-Dpolkit=disabled \
-		-Dhal=disabled \
 		-Dudev=disabled \
 		-Dnetcf=disabled \
 		-Dsysctl_config=disabled \