* fix prune doc

* fix prune demo batchsize

* fix lr (#593)

* fix lr schedule in prune demo (#595)

* fix prune demo batchsize

* fix lr shcedule in prune demo
;
Co-authored-by: Nwanghaoshuang <wanghaoshuang@baidu.com>

* remove softmax from demo/models (#596)

* fix prune demo batchsize

* fix lr shcedule in prune demo
;

* remove softmax from demo/models
Co-authored-by: Nwanghaoshuang <wanghaoshuang@baidu.com>

* fix prune demo log
Co-authored-by: Nwanghaoshuang <wanghaoshuang@baidu.com>

* fix prune doc

* fix prune demo batchsize
Co-authored-by: Nceci3 <ceci3@users.noreply.github.com>

* fix prune demo

* migrage static api

* fix a bug

* fix dataloader

* remove sensitive_pruner module

* migrate prune module

* fix some bug for migrating the prune module to 2.0-rc

* update some 1.8 api

* change num_worker from 16 to 1

* migrate common and core module

* fix a api in rl controller

* fix dataloader

* remove sensitive_pruner module

* migrate prune module

* Make unitest support for Paddle2.0 API.

* Fix demo in static mode

* Remove unused lines

* Fix demo of darts

* add slim pruning implementation and related unitest test=develop