gawk: remove empty host dependencies definition

Signed-off-by: Julien Floret <julien.floret@6wind.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gawk/gawk.mk

@@ -36,9 +36,6 @@ else
 GAWK_CONF_OPTS += --without-readline
 endif
 
-# We don't have a host-busybox, and we don't want to use readline or mpfr
-HOST_GAWK_DEPENDENCIES =
-
 HOST_GAWK_CONF_OPTS = --without-readline --without-mpfr
 
 define GAWK_CREATE_SYMLINK