package/postgresql: drop unrecognized variables

pgac_cv_snprintf_long_long_int_modifier has been dropped since version
11.0 and
https://github.com/postgres/postgres/commit/b929614f5e867c70721b3db31d3dec6cb35e1eb5

pgac_cv_snprintf_size_t_support has been dropped since version 12.0 and
https://github.com/postgres/postgres/commit/96bf88d52711ad3a0a4cc2d1d9cb0e2acab85e63

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/postgresql/postgresql.mk

@@ -13,8 +13,6 @@ POSTGRESQL_INSTALL_STAGING = YES
 POSTGRESQL_CONFIG_SCRIPTS = pg_config
 POSTGRESQL_CONF_ENV = \
 	ac_cv_type_struct_sockaddr_in6=yes \
-	pgac_cv_snprintf_long_long_int_modifier="ll" \
-	pgac_cv_snprintf_size_t_support=yes \
 	LIBS=$(TARGET_NLS_LIBS)
 POSTGRESQL_CONF_OPTS = --disable-rpath
 POSTGRESQL_DEPENDENCIES = $(TARGET_NLS_DEPENDENCIES)