package/systemd: drop optiopns that are now conditional

Commit 6f28ce53222 (package/systemd: enable building of systemd-boot)
made the efi and gnu-efi optiona conditional upon whether systemd-boot
is built or not, but forgot to remove the non-conditional ones.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: James Hilliard <james.hilliard1@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/systemd/systemd.mk

@@ -24,8 +24,6 @@ SYSTEMD_CONF_OPTS += \
 	-Dblkid=true \
 	-Dman=false \
 	-Dima=false \
-	-Defi=false \
-	-Dgnu-efi=false \
 	-Dlibcryptsetup=false \
 	-Dldconfig=false \
 	-Ddefault-dnssec=no \