Do not set completed if NoSuchVersion in removeObjects

Previously if batch object removal gets `NoSuchVersion` error only,
the iterator stops processing next batches. This is fixed by continue
processing next batches for `NoSuchVersion` but stops for other
errors.

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

Author: balamurugana

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

@@ -1117,7 +1117,7 @@ private synchronized void populate() {
               if (!response.result().errors().isEmpty()) {
                 errorIterator = response.result().errors().iterator();
                 setError();
-                completed = true;
+                completed = error != null;
               }
             } catch (MinioException e) {
               error = new Result<>(e);