Switch from libcrypto_static to libcrypto target

libcrypto target offers the same static library as libcrypto_static.
Thus, there's no need to use libcrypto_static.

Test: make futility-host
      futility-host binary unchanged (except for timestamp) by this
      commit
Bug: 26160319

Change-Id: I0b3052961ec9c59d3848e3b61fcd725c39606c0c