message: rename currencies_info to match get_currencies method name
  Closes:
diff: @@ -169,7 +169,7 @@ async fn get_account(
  .get_freezing_bit()?
  .ok_or_else(|| format_err!("invalid account data: no freezing bit"))?;
  - let currency_info = currencies_info(service, request).await?;
  + let currency_info = get_currencies(service, request).await?;
  let currencies: Vec<_> = currency_info
  .into_iter()
  .map(|info| from_currency_code_string(&info.code))
  @@ -325,7 +325,7 @@ async fn get_events(service: JsonRpcService, request: JsonRpcRequest) -> Result<
  }
  /// Returns meta information about supported currencies
  -async fn currencies_info(
  +async fn get_currencies(
  service: JsonRpcService,
  request: JsonRpcRequest,
  ) -> Result<Vec<CurrencyInfoView>> {
  @@ -481,7 +481,7 @@ pub(crate) fn build_registry() -> RpcRegistry {
  0
  );
  register_rpc_method!(registry, "get_events", get_events, 3, 0);
  - register_rpc_method!(registry, "get_currencies", currencies_info, 0, 0);
  + register_rpc_method!(registry, "get_currencies", get_currencies, 0, 0);
  register_rpc_method!(registry, "get_state_proof", get_state_proof, 1, 0);
  register_rpc_method!(
  