Remove resetConnection from Redis Reactive test

Related to https://build.spring.io/browse/INT-SONAR-3564

When we reset shared Redis connection between tests,
it may lead to a dead lock on some async command in process
when the next test initiate a new connection

* Remove `resetConnection()` from the `ReactiveRedisStreamMessageProducerTests` `@After` -
looks like it doesn't effect anything in a whole test suite

Author: artembilan

spring-integration-redis/src/test/java/org/springframework/integration/redis/inbound/ReactiveRedisStreamMessageProducerTests.java

@@ -97,7 +97,6 @@ public void delKey() {
 	@After
 	public void tearDown() {
 		this.reactiveRedisStreamProducer.stop();
-		RedisAvailableRule.connectionFactory.resetConnection();
 	}
 
 	@Test