Revert crypto: prng - Deterministic CPRNG

This patch is clearly not ready yet for prime time.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Makefile b/crypto/Makefile
index ef61b3b..d4f3ed8 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -69,7 +69,7 @@
 obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
 obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o
 obj-$(CONFIG_CRYPTO_LZO) += lzo.o
-obj-$(CONFIG_CRYPTO_PRNG) += prng.o
+
 obj-$(CONFIG_CRYPTO_TEST) += tcrypt.o
 
 #