package.nfs-utils: drop extra empty line

Commit 12c0f68caf (package/nfs-utils: bump version to 2.4.3) added an
extra empty line, causing check-package to whine:

    package/nfs-utils/nfs-utils.mk:27: consecutive empty lines

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/nfs-utils/nfs-utils.mk

@@ -24,7 +24,6 @@ NFS_UTILS_CONF_OPTS = \
 	--with-statedir=/run/nfs \
 	--with-rpcgen=$(HOST_DIR)/bin/rpcgen
 
-
 HOST_NFS_UTILS_CONF_OPTS = \
 	--disable-nfsv4 \
 	--disable-nfsv41 \