Remove OPENSSL_NO_CHAIN_VERIFY

Change-Id: Iaff2a1b4c394aa0d3d5a33cb75cf4f165d3c2abc
Reviewed-on: https://boringssl-review.googlesource.com/1387
Reviewed-by: Adam Langley <agl@google.com>

crypto/x509/x509_vfy.c

@@ -508,9 +508,6 @@ static int get_issuer_sk(X509 **issuer, X509_STORE_CTX *ctx, X509 *x)
 
 static int check_chain_extensions(X509_STORE_CTX *ctx)
 {
-#ifdef OPENSSL_NO_CHAIN_VERIFY
-	return 1;
-#else
 	int i, ok=0, must_be_ca, plen = 0;
 	X509 *x;
 	int (*cb)(int xok,X509_STORE_CTX *xctx);
@@ -661,7 +658,6 @@ static int check_chain_extensions(X509_STORE_CTX *ctx)
 	ok = 1;
  end:
 	return ok;
-#endif
 }
 
 static int check_name_constraints(X509_STORE_CTX *ctx)