netcat: remove --program-prefix

--program-prefix is now set in the auto-target infrastructure.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/netcat/netcat.mk

@@ -10,6 +10,5 @@ NETCAT_SITE=http://$(BR2_SOURCEFORGE_MIRROR).dl.sourceforge.net/sourceforge/netc
 NETCAT_AUTORECONF:=NO
 NETCAT_INSTALL_STAGING:=NO
 NETCAT_INSTALL_TARGET:=YES
-NETCAT_CONF_OPT = --program-prefix=''
 
 $(eval $(call AUTOTARGETS,package,netcat))