Remove unused variable in test

Author: garyrussell

spring-rabbit/src/test/java/org/springframework/amqp/rabbit/connection/PublisherCallbackChannelTests.java

@@ -138,15 +138,13 @@ void testNotCached() throws Exception {
 		Channel chan2 = conn.createChannel(false);
 		chan1.close();
 		chan2.close();
-		Properties cacheProperties = cf.getCacheProperties();
 		await().until(() -> {
 			Properties props = cf.getCacheProperties();
 			return Integer.parseInt(props.getProperty("idleChannelsNotTx")) == 2;
 		});
 		closeLatch.countDown();
 		assertThat(confirmLatch.await(10, TimeUnit.SECONDS)).isTrue();
 		assertThat(closedLatch.await(10, TimeUnit.SECONDS)).isTrue();
-		cacheProperties = cf.getCacheProperties();
 		await().until(() -> {
 			Properties props = cf.getCacheProperties();
 			return Integer.parseInt(props.getProperty("idleChannelsNotTx")) == 2;