BaseS3Client: remove unwanted checked Exception (#1696)

Signed-off-by: Bala.FA <bala@minio.io>

Author: balamurugana

api/src/main/java/io/minio/BaseS3Client.java

@@ -129,7 +129,7 @@ protected BaseS3Client(BaseS3Client client) {
 
   /** Closes underneath HTTP client. */
   @Override
-  public void close() throws Exception {
+  public void close() {
     if (closeHttpClient) {
       httpClient.dispatcher().executorService().shutdown();
       httpClient.connectionPool().evictAll();