Revert "wpa: Fix WITHOUT_CRYPT build"

This reverts commit a30e8044aa4753858c189f3384dae2b2f25a150b.
WITHOUT_OPENSSL build is a subset of WITHOUT_CRYPT build. It was
incorrect to label this patch as fixing WITHOUT_CRYPT when in fact
it fixes WITHOUT_OPENSSL. The build failure will be addressed in a
fix for WITHOUT_OPENSSL build.

MFC after: 1 week