Remove unnecessary constraints

Remove unnecessary constraints.

This merge proposal was created automatically by the Janitor bot. For more information, including instructions on how to disable these merge proposals, see https://janitor.debian.net/scrub-obsolete.

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Build and test logs for this branch can be found at https://janitor.debian.net/scrub-obsolete/pkg/xbacklight/11feee97-f632-4e0b-b110-fd6d6538884b.

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/31/379485a5cd0634a0a965888985ee68fdb4e311.debug

Files in first set of .debs but not in second

-rw-r--r--  root/root   /usr/lib/debug/.build-id/a0/cedc2982dc6ea2aeeeb4bab59bda65f9e101b6.debug

No differences were encountered between the control files of package **xbacklight**

Control files of package xbacklight-dbgsym: lines which differ (wdiff format)

• Build-Ids: a0cedc2982dc6ea2aeeeb4bab59bda65f9e101b6 31379485a5cd0634a0a965888985ee68fdb4e311

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