How to remove Scheduling Start and End date from document library

To remove the scheduling, Please find the following steps:

     1. Go to Document Library > Library Tab > Library Settings > Versioning Settings

2. Select Yes Radio button under Require Content Approval. Then, select Create major and minor versions under Document Version History. Click OK

3. Document Library > Library Tab > Library Settings > Manage Item Scheduling

4. Click the checkbox next to Enable scheduling of items in this list. Click OK

5. Back to Document Library > Library Tab > Library Settings > Manage Item Scheduling, uncheck the box you checked in previous step (the way it is, I know). Click OK.

6. The columns will be gone by now.

Done!!!