Revert "Ajay | #2600 | Handled unique id error for ds import"

This reverts commit 64e0f4971d511b69e8ed132d7463042bea136ea8.
Revert "Ajay | #2600 | Commenting out ds validator usage in old migration script"

This reverts commit 35b0a2a3d9c5d0c38b831113f572b8c2e47ad43d.
Revert "Ajay | #2600 | Handle Phone number validation for edit data sender"

This reverts commit 0a9be353420d23c72bc5f098b07c9bd574b85c69.
Revert "Ajay | Ashwin | #2229 | Added validators for unique datasender id."

This reverts commit 0fc5e9f46d25e25262fb14ddf299cd303d28dcdf.
Revert "Ajay | #2600 | Validations for datasender imports"

This reverts commit 4174ed18bf22e816d692e2243d603b5fcbf0f41c.