configure: remove detection of the old yassl emulation API

                    SSLv2_client_method \

                    DES_set_odd_parity )

    dnl Make an attempt to detect if this is actually yassl's headers and

    dnl OpenSSL emulation layer. We still leave everything else believing

    dnl and acting like OpenSSL.

    AC_MSG_CHECKING([for yaSSL using OpenSSL compatibility mode])

    AC_COMPILE_IFELSE([

      AC_LANG_PROGRAM([[

#include <openssl/ssl.h>

      ]],[[

#if defined(YASSL_VERSION) && defined(OPENSSL_VERSION_NUMBER)

        int dummy = SSL_ERROR_NONE;

#else

        Not the yaSSL OpenSSL compatibility header.

#endif

      ]])

    ],[

      AC_MSG_RESULT([yes])

      AC_DEFINE_UNQUOTED(USE_YASSLEMUL, 1,

        [Define to 1 if using yaSSL in OpenSSL compatibility mode.])

      curl_ssl_msg="enabled (OpenSSL emulation by yaSSL)"

    ],[

      AC_MSG_RESULT([no])

    ])

    AC_MSG_CHECKING([for BoringSSL])

    if test "x$ac_cv_func_DES_set_odd_parity" != "xyes"; then

      curl_ssl_msg="enabled (BoringSSL)"