tree a28f5f42b17bbb636dce5014a49193f5bc52e704
parent 56eaa1e736c3506dab2a98e99c43e25e5ecf71bb
author davidben <davidben@google.com> 1755792358 -0700
committer Copybara-Service <copybara-worker@google.com> 1755792402 -0700

Remove stale BORINGSSL_API_VERSION ifdefs

The current oldest supported BoringSSL version in QUICHE has a `BORINGSSL_API_VERSION` of 36.

Remove all the old ifdefs so that pre-`SSL_CREDENTIAL` BoringSSLs do not burden further work on the library, including work needed for the post-quantum transition. Carrying them around also gave a mistaken impression that we support or test these alternate codepaths.

PiperOrigin-RevId: 797788302