package/libcec: drop unrecognized option

HAVE_DATE_BIN has been dropped since version 4.0.5 and
https://github.com/Pulse-Eight/libcec/commit/d04037825e8c49075ddd3ae6f8f0b94a0fef2709

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libcec/libcec.mk

@@ -39,7 +39,6 @@ endif
 
 # Disable information about how libCEC is compiled.
 LIBCEC_CONF_OPTS += -DHAVE_GIT_BIN="" \
-	-DHAVE_DATE_BIN="" \
 	-DHAVE_WHOAMI_BIN="" \
 	-DHAVE_HOSTNAME_BIN="" \
 	-DHAVE_UNAME_BIN=""