[openssl-project] Removing assembler for outdated algorithms

[Salz, Rich]

This is derived from bureau/libcrypto-proposal that Emilila made in November 2015.

We should remove the assembler versions of the following
                Blowfish, cast, des, rc4, rc5, ripemd, whirlpool, md5

The reason is that they are outdated, not in use very much, and optimization is not important, compared to having a single reference source that we can maintain and debug.

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