Fix minor compilation warnings

apis/docker/src/main/java/org/jclouds/docker/compute/config/DockerComputeServiceContextModule.java

@@ -37,6 +37,7 @@ import org.jclouds.functions.IdentityFunction;
 public class DockerComputeServiceContextModule extends
         ComputeServiceAdapterContextModule<Container, Hardware, Image, Location> {
 
+   @SuppressWarnings("unchecked")
    @Override
    protected void configure() {
       super.configure();

apis/docker/src/test/java/org/jclouds/docker/compute/functions/ContainerToNodeMetadataTest.java

@@ -187,7 +187,6 @@ public class ContainerToNodeMetadataTest {
       assertEquals(node.getPublicAddresses().size(), 1);
    }
 
-   @SuppressWarnings("unchecked")
    private Container mockContainer() {
       Container mockContainer = EasyMock.createMock(Container.class);
 

apis/docker/src/test/java/org/jclouds/docker/compute/functions/ImageToImageTest.java

@@ -60,7 +60,6 @@ public class ImageToImageTest {
       assertEquals(mockImage.getId(), image.getId().toString());
    }
 
-   @SuppressWarnings("unchecked")
    private org.jclouds.docker.domain.Image mockImage() {
       org.jclouds.docker.domain.Image mockImage = EasyMock.createMock(org.jclouds.docker.domain.Image.class);