Need to unbundle capstone due to broken capstone-5 compatibility:

https://github.com/radareorg/radare2/issues/21204
https://bugs.gentoo.org/891805

diff --git a/shlr/Makefile b/shlr/Makefile
index 5626a061ff..5e8af3b99b 100644
--- a/shlr/Makefile
+++ b/shlr/Makefile
@@ -225,10 +225,7 @@ capstone-sync: capstone
 capstone-clean:
 	-$(MAKE) -C capstone clean
 
-capstone: capstone-$(CS_VER).tar.gz
-	tar xzvf capstone-$(CS_VER).tar.gz
-	rm -rf capstone
-	mv capstone-$(CS_VER) capstone
+capstone:
 	$(MAKE) patch-capstone
 
 # already implemented in capstone.sh