Remove obsolete property.

spring-cloud-consul-config/src/test/java/org/springframework/cloud/consul/config/ConsulPropertySourceTests.java

@@ -43,7 +43,6 @@ public class ConsulPropertySourceTests {
 	public void setup() {
 		properties = new ConsulProperties();
 		prefix = "consulPropertySourceTests" + new Random().nextInt(Integer.MAX_VALUE);
-		properties.setPrefix(prefix);
 		client = new ConsulClient(properties.getHost(), properties.getPort());
 	}
 

spring-cloud-consul-core/src/main/java/org/springframework/cloud/consul/ConsulProperties.java

@@ -38,6 +38,4 @@ public class ConsulProperties {
 
 	/** Is spring cloud consul enabled */
 	private boolean enabled = true;
-
-	private String prefix = "config";
 }