ODS exporter adds an additonal empty sheet to the project

[wetneb]

The ODF exporter creates files with two sheets: the first is empty, and the second contains the project data. We should remove the first one.

To Reproduce

Steps to reproduce the behavior:

1. First, export any project to ODF
2. Then, open it (for instance with LibreOffice)

Current Results

The exported file contains two sheets, the first one being empty.

Expected Behavior

The exported file should contain a single sheet with the project data.

Versions

• Operating System: Debian
• JRE or JDK Version: 11
• OpenRefine: 3.6-SNAPSHOT

Datasets

Example exported file: Clipboard.ods

Additional context

Similar to #4738

[vdimopoulos]

Can you assign me to this one? Thank you in advance!

[xiao2k]

I think we can use getTableByName("Sheet1") and defTable.remove(); to solve this issue.

I did a little change to have a try.

[wetneb]

@xiao2k since @vdimopoulos was assigned to this issue, it is nice if you can check with them first if they are still working on this issue before working on it yourself. No worries for this time though, I think 10 days is indeed enough to tackle something like this :)