debian/rules: drop special case for riscv64

This is not necessary anymore since gcc-13.

Author: terceiro

debian/rules

@@ -105,11 +105,7 @@ export LC_ALL := $(LANG)
 override_dh_auto_configure:
 	cp /usr/share/misc/config.guess tool
 	cp /usr/share/misc/config.sub tool
-ifeq (riscv64,$(DEB_HOST_ARCH))
-	LIBS="-latomic" ./configure $(configure_options)
-else
 	./configure $(configure_options)
-endif
 
 override_dh_auto_clean:
 	$(MAKE) clean || true