Revert "Add change in audio_to_text_dataset.py to test lint error"

This reverts commit 6ee890d.

Signed-off-by: Charlie Truong <chtruong@nvidia.com>

Author: chtruong814

nemo/collections/asr/data/audio_to_text_dataset.py

@@ -11,7 +11,6 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-# test
 
 import copy
 import json