testing: Disable tx dynamic test

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

testing/integration-tests/src/full_client/frame/balances.rs

@@ -88,6 +88,7 @@ async fn tx_basic_transfer() -> Result<(), subxt::Error> {
     Ok(())
 }
 
+#[cfg(fullclient)]
 #[tokio::test]
 async fn tx_dynamic_transfer() -> Result<(), subxt::Error> {
     use subxt::ext::scale_value::{At, Composite, Value};