Revert "btif: Short circuit NIAP key attestation check"

constexpr int kBufferSize = 400 * 10;  // initial file is ~400B

static bool override_use_key_attestation() {

  char key_attestation[PROPERTY_VALUE_MAX] = {0};

  osi_property_get("persist.bluetooth.use_key_attestation", key_attestation, "false");

  return strncmp(key_attestation, "true", 4) == 0;

}

static bool use_key_attestation() {

  // Short circuiting until keystore issue is fixed

  return getuid() == AID_BLUETOOTH /* remove if keystore fixed */ && override_use_key_attestation();

}

static bool use_key_attestation() { return getuid() == AID_BLUETOOTH; }

#define BT_CONFIG_METRICS_SECTION "Metrics"

#define BT_CONFIG_METRICS_SALT_256BIT "Salt256Bit"