build: remove EVP_MD_CTX_new detection

This was added in #9475 to fix LibreSSL compatibility for
BIP70, so is no longer required.

build_msvc/bitcoin_config.h

@@ -98,10 +98,6 @@
    */
 #define HAVE_DECL_DAEMON 0
 
-/* Define to 1 if you have the declaration of `EVP_MD_CTX_new', and to 0 if
-   you don't. */
-//#define HAVE_DECL_EVP_MD_CTX_NEW 1
-
 /* Define to 1 if you have the declaration of `htobe16', and to 0 if you
    don't. */
 #define HAVE_DECL_HTOBE16 0

configure.ac

@@ -1303,13 +1303,6 @@ else
   fi
 fi
 
-save_CXXFLAGS="${CXXFLAGS}"
-CXXFLAGS="${CXXFLAGS} ${CRYPTO_CFLAGS} ${SSL_CFLAGS}"
-AC_CHECK_DECLS([EVP_MD_CTX_new],,,[AC_INCLUDES_DEFAULT
-#include <openssl/x509_vfy.h>
-])
-CXXFLAGS="${save_CXXFLAGS}"
-
 dnl RapidCheck property-based testing
 
 enable_property_tests=no