ImportedFile: remove slug 1/2

[stsewd]

We are not using this field,
actually we are not even setting it.

readthedocs.org/readthedocs/projects/tasks.py

Lines 1551 to 1559 in 9846324

	model_class.objects.create(
	project=version.project,
	version=version,
	path=relpath,
	name=filename,
	md5=md5,
	commit=commit,
	build=build,
	)

In production all files have that field empty.

I'm making this a two-step operation, so we don't have downtime.

[stsewd]

The migration needs to be updated after #7274 is merged

[humitos]

If we are not setting it when creating the object, it wasn't null=True and it has not default= value, how it was working?

[stsewd]

@humitos who knows 🤷‍♂️

[humitos]

Weird...

                                        Table "public.projects_importedfile"
    Column     |           Type           | Collation | Nullable |                      Default                      
---------------+--------------------------+-----------+----------+---------------------------------------------------
...
 slug          | character varying(50)    |           | not null |
...

slug is being set to '' for some reason. We must be doing something somewhere else.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[ericholscher]

Makes sense to me -- is part 2 of this work tracked somewhere?

[stsewd]

is part 2 of this work tracked somewhere?

Part two is just to the actual deletion of the field, I was about to make that PR after this one was merged