[openssl/openssl] 16ff70: Remove the _fetch_by_number functions

[pauli]

  Branch: refs/heads/master
  Home:   https://github.openssl.org/openssl/openssl
  Commit: 16ff70a58cfb5c40197e6a940cf4666226f31b79
      https://github.openssl.org/openssl/openssl/commit/16ff70a58cfb5c40197e6a940cf4666226f31b79
  Author: Pauli <pauli at openssl.org>
  Date:   2022-05-06 (Fri, 06 May 2022)

  Changed paths:
    M crypto/encode_decode/decoder_meth.c
    M crypto/encode_decode/encoder_meth.c
    M crypto/evp/evp_fetch.c
    M crypto/evp/evp_local.h
    M crypto/evp/keymgmt_meth.c
    M crypto/store/store_local.h
    M crypto/store/store_meth.c
    M doc/internal/man3/evp_generic_fetch.pod
    M include/crypto/decoder.h
    M include/crypto/encoder.h

  Log Message:
  -----------
  Remove the _fetch_by_number functions

These functions are unused and untested.  They are also implemented rather
inefficiently.  If we ever needed them in the future, they'd almost surely
need to be rewritten more efficiently.

Fixes #18227

Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18237)