Remove unused libcrypto dependency.

libcrypto is unused, which causes problems when boringssl hash
injection is turned on as the code is all stripped and there is
nothing left to inject the hash into.

See http://r.android.com/1117291 for the AOSP change to related
modules.

Bug: 137267623
Test: croot hardware/interfaces/wifi && mma
Change-Id: I9d002c0b723cf9a04ee64641b5281e65912595c8