Trac #33308: Remove expired deprecations that use lazy_import(MODULE,…

… "*")

After building Sage, in the first run, Sage spends some time building
the "lazy import cache".

This whole mechanism (from #8456, modified in #11924, #12670) is
currently only used for a total of 3 re-imports with deprecation. They
could be easily be rewritten by just listing all symbols instead of
using "*"; but it turns out that the deprecations have all expired
already (#19150, #26370, #27337), so we can remove them.

{{{
$ git grep '^lazy_import.*[*]'
src/sage/combinat/lyndon_word.py:lazy_import('sage.combinat.words.lyndon
_word', '*', deprecation=19150)
src/sage/rings/invariant_theory.py:lazy_import('sage.rings.invariants.in
variant_theory', '*', deprecation=26370)
src/sage/tests/all.py:lazy_import('sage.tests.arxiv_0812_2725', '*',
deprecation=27337)
}}}

URL: https://trac.sagemath.org/33308
Reported by: mkoeppe
Ticket author(s): Matthias Koeppe
Reviewer(s): Michael Orlitzky

src/sage/tests/all.py

@@ -1,24 +1,2 @@
 """
-TESTS:
-
-Test the deprecation warnings::
-
-    sage: tests.CompleteMatchings
-    doctest:warning
-    ...
-    DeprecationWarning:
-    Importing CompleteMatchings from here is deprecated. If you need to use it, please import it directly from sage.tests.arxiv_0812_2725
-    See https://trac.sagemath.org/27337 for details.
-    <function CompleteMatchings at ...>
-    sage: tests.modsym
-    doctest:warning
-    ...
-    DeprecationWarning:
-    Importing modsym from here is deprecated. If you need to use it, please import it directly from sage.modular.modsym.tests
-    See https://trac.sagemath.org/27337 for details.
-    <class ...sage.modular.modsym.tests.Test...>
 """
-
-from sage.misc.lazy_import import lazy_import
-lazy_import('sage.modular.modsym.tests', 'Test', as_='modsym', deprecation=27337)
-lazy_import('sage.tests.arxiv_0812_2725', '*', deprecation=27337)