Remove useless log line

hapi-fhir-client/src/main/java/ca/uhn/fhir/rest/client/apache/ApacheHttpResponse.java

@@ -98,24 +98,23 @@ public class ApacheHttpResponse implements IHttpResponse {
 		}
 		if (charset == null) {
 			if (Constants.STATUS_HTTP_204_NO_CONTENT != myResponse.getStatusLine().getStatusCode()) {
-				ourLog.warn("Response did not specify a charset.");
+				ourLog.debug("Response did not specify a charset, defaulting to utf-8");
 			}
 			charset = Charset.forName("UTF-8");
 		}
 
-		Reader reader = new InputStreamReader(readEntity(), charset);
-		return reader;
+		return new InputStreamReader(readEntity(), charset);
 	}
 
 	@Override
 	public Map<String, List<String>> getAllHeaders() {
-		Map<String, List<String>> headers = new HashMap<String, List<String>>();
+		Map<String, List<String>> headers = new HashMap<>();
 		if (myResponse.getAllHeaders() != null) {
 			for (Header next : myResponse.getAllHeaders()) {
 				String name = next.getName().toLowerCase();
 				List<String> list = headers.get(name);
 				if (list == null) {
-					list = new ArrayList<String>();
+					list = new ArrayList<>();
 					headers.put(name, list);
 				}
 				list.add(next.getValue());
@@ -131,7 +130,7 @@ public class ApacheHttpResponse implements IHttpResponse {
 		if (headers == null) {
 			headers = new Header[0];
 		}
-		List<String> retVal = new ArrayList<String>();
+		List<String> retVal = new ArrayList<>();
 		for (Header next : headers) {
 			retVal.add(next.getValue());
 		}

hapi-fhir-validation/src/main/java/org/hl7/fhir/dstu3/validation/InstanceValidator.java

@@ -292,7 +292,7 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
     source = Source.InstanceValidator;
   }
 
-
+t
 
   @Override
   public boolean isNoInvariantChecks() {

src/changes/changes.xml

@@ -64,6 +64,11 @@
 				If-Match header when passed in via 
 				<![CDATA[<code>Bundle.entry.request.ifMatch</code>]]> value
 			</action>
+			<action type="add">
+				In Apache client, remove a log message at WARN level when the response does not
+				specify a charset. This log line often showed up any time a server was not supplying
+				a response, making client logs quite noisy
+			</action>
 		</release>
 		<release version="3.0.0" date="2017-09-27">
 			<action type="add">