Remove superfluous OpenSSL include paths.

This include path was needed because system/vold/cryptfs.h included an
OpenSSL header just to get the length of a SHA-256 hash. This has been
fixed in https://android-review.googlesource.com/#/c/124477/1.

Change-Id: I06a8ba0ee5b9efcc3260598f07d9819f065711de