message: remove ursa feature build flags
diff: @@ -37,7 +37,7 @@ if(NOT TARGET hyperledger_ursa_build)
  BUILD_IN_SOURCE 1
  BUILD_COMMAND ${CMAKE_COMMAND} -E
  env OPENSSL_DIR=${OPENSSL_ROOT_DIR}
  - cargo build --release --no-default-features --features="ffi"
  + cargo build --release
  CONFIGURE_COMMAND "" # remove configure step
  UPDATE_COMMAND "" # remove update step
  INSTALL_COMMAND "" # remove install step
  