remove data count

[Nicole00]

remove data count operation：

1. to reduce the importing time, count will cost extra time.
2. to fix the bug for streaming data source cannot be count.

[wey-gu]

Could we have reasons why removing it?

[Nicole00]

Could we have reasons why removing it?

data importing is all map operations

1. count will cause long time cost, because the data will be processed and write into Nebula util the count operation done.
2. streaming data source cannot be count.

The base branch was changed.

[wey-gu]

Could we have reasons why removing it?

data importing is all map operations

1. count will cause long time cost, because the data will be processed and write into Nebula util the count operation done.
2. streaming data source cannot be count.

Thanks!