crypto/openssl: remove autogenerated files

[ngie]

Summary

These files contain build host paths and other configuration details
that can be regenerated via the standard vendor import process. Don't
clutter up the FreeBSD tree with these files.

MFC after: 1 week

Test Plan

• git status no longer dumps out a large number of untracked/build environment only generated files.
• The build completes successfully on all architectures with a clean object tree.