libxslt: fixup configure options

Some configure options changed so adjust.
Forcibly disabling threads isn't good and also it's detected by
configure when there are no threads.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libxslt/libxslt.mk

@@ -15,19 +15,12 @@ else
 LIBXSLT_XTRA_CONF_OPT = --without-crypto
 endif
 
-LIBXSLT_CONF_OPT = --with-gnu-ld --enable-shared \
-		--enable-static $(LIBXSLT_XTRA_CONF_OPT) \
-		--without-debugging --without-python \
-		--without-threads \
-		--with-libxml-prefix=$(STAGING_DIR)/usr/
+LIBXSLT_CONF_OPT = --with-gnu-ld $(LIBXSLT_XTRA_CONF_OPT) --without-debug \
+		--without-python --with-libxml-prefix=$(STAGING_DIR)/usr/
 
 LIBXSLT_DEPENDENCIES = libxml2 $(LIBXSLT_DEPENDENCIES_EXTRA)
 
-HOST_LIBXSLT_CONF_OPT = --enable-shared \
-			--without-debugging \
-			--without-python \
-			--without-threads \
-			--without-crypto
+HOST_LIBXSLT_CONF_OPT = --without-debug --without-python --without-crypto
 
 HOST_LIBXSLT_DEPENDENCIES = host-libxml2