Drop pbkdf2 module (superseded by pkcs5)
diff --git a/library/Makefile b/library/Makefile
index 81a164c..846dee9 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -56,8 +56,7 @@
 		md.o		md_wrap.o	md2.o			\
 		md4.o		md5.o						\
 		memory_buffer_alloc.o	net.o			\
-		oid.o									\
-		padlock.o	pbkdf2.o	pem.o			\
+		oid.o		padlock.o	pem.o			\
 		pkcs5.o		pkcs11.o	pkcs12.o		\
 		pk.o		pk_wrap.o	pkparse.o		\
 		pkwrite.o	platform.o	ripemd160.o		\