tighter documentation and drop a log statement (#899)

* fix

* fix documentation

docs/src/main/asciidoc/property-source-config.adoc

@@ -680,7 +680,8 @@ Remember that the same can be done for config maps. If such a namespace is not s
 3. from a String residing in `/var/run/secrets/kubernetes.io/serviceaccount/namespace` file
 (kubernetes default namespace path)
 4. from a designated client method call (for example fabric8's : `KubernetesClient::getNamespace`), if the client provides
-such a method.
+such a method. This, in turn, could be configured via environment properties. For example fabric8 client can be configured via
+"KUBERNETES_NAMESPACE" property; consult the client documentation for exact details.
 
 Failure to find a namespace from the above steps will result in an Exception being raised.
 

spring-cloud-kubernetes-fabric8-autoconfig/src/main/java/org/springframework/cloud/kubernetes/fabric8/Fabric8AutoConfiguration.java

@@ -98,10 +98,6 @@ public class Fabric8AutoConfiguration {
 				.withProxyPassword(or(kubernetesClientProperties.getProxyPassword(), base.getProxyPassword()))
 				.withNoProxy(or(kubernetesClientProperties.getNoProxy(), base.getNoProxy())).build();
 
-		if (properties.getNamespace() == null || properties.getNamespace().isEmpty()) {
-			LOG.warn("No namespace has been detected. Please specify "
-					+ "KUBERNETES_NAMESPACE env var, or use a later kubernetes version (1.3 or later)");
-		}
 		return properties;
 	}