Remove fk constraints from return_value.timetable_version

[HenrikHartiala]

These return_value schema tables are only for function return values, and they should not be part of the data model via any constraints.

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This change is 

[jarkkoka]

Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @culka and @HenrikHartiala)

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-- commits line 4 at r1:
Good note! 👍

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migrations/hsl/timetables/1692783935710_remove_foreign_key_constraints_on_return_value_timetable_version/down.sql line 6 at r1 (raw file):

ALTER TABLE return_value.timetable_version
  ADD CONSTRAINT timetable_version_substitute_operating_day_by_line_type_id_fkey

Whoa, the ID of this constraint was previously set to exactly at 63 character limit (any longer would be truncated).

[HenrikHartiala]

Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @culka and @jarkkoka)

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-- commits line 4 at r1:

Previously, jarkkoka (Jarkko Kaura) wrote…

Good note! 👍

👌

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migrations/hsl/timetables/1692783935710_remove_foreign_key_constraints_on_return_value_timetable_version/down.sql line 6 at r1 (raw file):

Previously, jarkkoka (Jarkko Kaura) wrote…

Whoa, the ID of this constraint was previously set to exactly at 63 character limit (any longer would be truncated).

ahh, that one :D Did not remember it. Well that was lucky