Polish to remove warnings

spring-credhub-core/src/main/java/org/springframework/credhub/support/CredHubRequest.java

@@ -150,7 +150,6 @@ public class CredHubRequest<T> {
 	/**
 	 * A builder that provides a fluent API for constructing {@link CredHubRequest}s.
 	 */
-	@SuppressWarnings("unchecked")
 	protected static abstract class CredHubRequestBuilder<T, R extends CredHubRequest<T>, B extends CredHubRequestBuilder<T, R, B>> {
 		private final B thisObj;
 		protected final R targetObj;

spring-credhub-core/src/main/java/org/springframework/credhub/support/json/JsonCredential.java

@@ -25,7 +25,6 @@ import java.util.Map;
  *
  * @author Scott Frederick
  */
-@SuppressWarnings("javadoc")
 public class JsonCredential extends HashMap<String, Object> {
 	/**
 	 * @see HashMap#HashMap()

spring-credhub-core/src/test/java/org/springframework/credhub/configuration/ClientHttpRequestFactoryFactoryTests.java

@@ -65,6 +65,7 @@ public class ClientHttpRequestFactoryFactoryTests {
 	}
 
 	@Test
+	@SuppressWarnings("deprecation")
 	public void nettyClientCreated() throws Exception {
 		ClientHttpRequestFactory factory = usingNetty(new ClientOptions());
 

spring-credhub-core/src/test/java/org/springframework/credhub/core/certificate/CredHubCertificateTemplateUnitTests.java

@@ -135,7 +135,7 @@ public class CredHubCertificateTemplateUnitTests {
 	public void bulkRegenerate() {
 		Map<String, List<CredentialName>> expectedResponse =
 				Collections.singletonMap(REGENERATED_CREDENTIALS_RESPONSE_FIELD,
-						Arrays.<CredentialName>asList(
+						Arrays.asList(
 								new SimpleCredentialName("example-certificate1"),
 								new SimpleCredentialName("example-certificate2")));
 

spring-credhub-core/src/test/java/org/springframework/credhub/support/CredHubRequestUnitTestsBase.java

@@ -51,7 +51,7 @@ public abstract class CredHubRequestUnitTestsBase {
 	}
 
 	@Test
-	@SuppressWarnings({"unchecked", "deprecation"})
+	@SuppressWarnings({"deprecation"})
 	public void serializationWithThreePermissions() {
 		requestBuilder
 				.permission(Permission.builder()