package/sconeserver: drop unneeded static openssl workaround

sconeserver can't be built statically since commit
a845798aa8af0535b85ea0e46cc9e8af9d1ffed1

So drop unneeded workaround for statically linking with openssl

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

package/sconeserver/sconeserver.mk

@@ -25,9 +25,6 @@ endif
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 SCONESERVER_DEPENDENCIES += openssl
 SCONESERVER_CONF_OPTS += --with-ssl
-ifeq ($(BR2_STATIC_LIBS),y)
-SCONESERVER_CONF_ENV += SSL_LIBADD=-lz
-endif
 else
 SCONESERVER_CONF_OPTS += --without-ssl
 endif