Remove some unimplemented prototypes.

We don't have the corresponding functions anyway.

Change-Id: I9771771f011da295db708ed8bc635b4748d0101b
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/41784
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/x509.h b/include/openssl/x509.h
index 3a0391a..2a0e233 100644
--- a/include/openssl/x509.h
+++ b/include/openssl/x509.h
@@ -1082,8 +1082,6 @@
 
 OPENSSL_EXPORT EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8);
 OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(EVP_PKEY *pkey);
-OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8_broken(EVP_PKEY *pkey, int broken);
-OPENSSL_EXPORT PKCS8_PRIV_KEY_INFO *PKCS8_set_broken(PKCS8_PRIV_KEY_INFO *p8, int broken);
 
 OPENSSL_EXPORT int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj,
 			int version, int ptype, void *pval,