Garbage collect an incoherent export crypto check

Garbage collect an incoherent export crypto check

Contrast "#define EVP_PKT_EXP  0x1000 /* <= 512 bit key */" with the diff:

-       /* /8 because it's 1024 bits we look for, not bytes */
-       if (EVP_PKEY_size(pk) <= 1024 / 8)
-               ret |= EVP_PKT_EXP;

EVP_PKT_EXP will be nuked at the next opportunity.

discussed with jsing