knot-resolver: do not overwrite -Ddnstap=enabled configuration

It was possible to enable dnstap in menuconfig, but the configuration
only added dependencies while leaving dnstap module build disabled.

Signed-off-by: Šimon Bořek <simon.borek@nic.cz>

net/knot-resolver/Makefile

@@ -11,7 +11,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=knot-resolver
 PKG_VERSION:=5.7.0
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=https://secure.nic.cz/files/knot-resolver
@@ -59,7 +59,6 @@ MESON_ARGS+= \
 	-Dcapng=disabled \
 	-Dclient=disabled \
 	-Dconfig_tests=disabled \
-	-Ddnstap=disabled \
 	-Ddoc=disabled \
 	-Dinstall_kresd_conf=disabled \
 	-Dinstall_root_keys=disabled \