HADOOP-19004. httpsigner

* Remove unused method in s3afs
* put static imports in DefaultS3ClientFactory in right order

Change-Id: Ib5125d5e1a373835bac5f90efed42d0947cd1ba5

Author: steveloughran

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/DefaultS3ClientFactory.java

@@ -57,11 +57,11 @@
 import static org.apache.hadoop.fs.s3a.Constants.HTTP_SIGNER_CLASS_NAME;
 import static org.apache.hadoop.fs.s3a.Constants.HTTP_SIGNER_ENABLED;
 import static org.apache.hadoop.fs.s3a.Constants.HTTP_SIGNER_ENABLED_DEFAULT;
-import static org.apache.hadoop.fs.s3a.auth.SignerFactory.createHttpSigner;
-import static org.apache.hadoop.fs.s3a.impl.AWSHeaders.REQUESTER_PAYS_HEADER;
 import static org.apache.hadoop.fs.s3a.Constants.DEFAULT_SECURE_CONNECTIONS;
 import static org.apache.hadoop.fs.s3a.Constants.SECURE_CONNECTIONS;
 import static org.apache.hadoop.fs.s3a.Constants.AWS_SERVICE_IDENTIFIER_S3;
+import static org.apache.hadoop.fs.s3a.auth.SignerFactory.createHttpSigner;
+import static org.apache.hadoop.fs.s3a.impl.AWSHeaders.REQUESTER_PAYS_HEADER;
 import static org.apache.hadoop.fs.s3a.impl.InternalConstants.AUTH_SCHEME_AWS_SIGV_4;
 
 

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java

@@ -5760,10 +5760,6 @@ public StoreContext createStoreContext() {
         .build();
   }
 
-  public CreateSessionResponse createSessionInternal(CreateSessionRequest createSessionRequest){
-    return this.s3Client.createSession(createSessionRequest);
-  }
-
   /**
    * Create a marker tools operations binding for this store.
    * Auditing: