add explicit paramter for infinite iterators

set appropriate value for num_epoch param for iteratos

fix long lines

remove trailing whitespace

fixed typo

remove comment

fixed comments

fixed test

This reverts commit b077aa1cab.

Revert "[feat] [assistant] [I3T96X] add new Dataset operator LibriSpeechDataset"

This reverts commit 4e6f7dc97d.

delete pass_registry_test.cc

comment  hiai_nlu_model_multi.pb related  line

change ImagefolderDV2 name

change ds.transforms.vision to ds.vision

change batch api to match map api more closely

compose op changes

test_pylint

remove compose op from vision, move to transform module, refactor map and batch to use column_order

delete unrelated file

change finally to except else

fix spacing alignment

fix indentation

fix indentation

fix indentation

add fix to new test case

add if main for pytest

fix spacing

add support for MindRecord and TFRecord
----
optimize tensorshape

optimize tensorshape and FlatIndex

TFRecord and MindRecord support for string tensor

Modify mem layout
Add new constructor
Add method Allocate

Change some GetMutableBuffer usages to AllocateBuffer

Signed-off-by: leonwanghui <leon.wanghui@huawei.com>