package/libgpgme: drop HOST_LIBGPGME_CONFIG_SCRIPTS

This variable was added in commit
6a4ad23a07236348034a54997dd09e79166f2d11 ("package/libgpgme: add host
variant"), but in fact does not make sense for a host package. Indeed,
config scripts only need to be tweaked for target packages, and in any
case, the <pkg>_CONFIG_SCRIPTS variable is only used during staging
installation (to tweak the config scripts) and during target
installation (to remove them), and neither staging nor target
installation are relevant for host packages.

Therefore, let's remove this small piece of dead code.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libgpgme/libgpgme.mk

@@ -48,7 +48,6 @@ LIBGPGME_CONF_OPTS += --disable-linux-getdents
 endif
 
 HOST_LIBGPGME_DEPENDENCIES = host-libassuan host-libgpg-error
-HOST_LIBGPGME_CONFIG_SCRIPTS = gpgme-config
 
 # C++ bindings require a C++11 capable gcc, and -Wsuggest-override support
 # Let's assume the host toolchain always has C++