Remove all remaining removed_in_20 warnings slated for removal

Finalize all remaining removed-in-2.0 changes so that we
can begin doing pep-484 typing without old things
getting in the way (we will also have to do public_factory).

note there are a few "moved_in_20()" and "became_legacy_in_20()"
warnings still in place.  The SQLALCHEMY_WARN_20 variable
is now removed.

Also removed here are the legacy "in place mutators" for Select
statements, and some keyword-only argument signatures in Core
have been added.

Also in the big change department, the ORM mapper() function
is removed entirely; the Mapper class is otherwise unchanged,
just the public-facing API function.  Mappers are now always
given a registry in which to participate, however the
argument signature of Mapper is not changed. ideally "registry"
would be the first positional argument.

Fixes: #7257

Change-Id: Ic70c57b9f1cf7eb996338af5183b11bdeb3e1623

1 files changed, 0 insertions, 21 deletions

diff --git a/test/ext/declarative/test_deprecations.py b/test/ext/declarative/test_deprecations.py
index 58ad2fced..a4192fddb 100644
--- a/test/ext/declarative/test_deprecations.py
+++ b/test/ext/declarative/test_deprecations.py
@@ -1,34 +1,13 @@
 import sqlalchemy as sa
 from sqlalchemy import inspect
 from sqlalchemy.ext import declarative as legacy_decl
-from sqlalchemy.ext.declarative import instrument_declarative
-from sqlalchemy.orm import Mapper
 from sqlalchemy.testing import eq_
 from sqlalchemy.testing import expect_deprecated_20
 from sqlalchemy.testing import fixtures
-from sqlalchemy.testing import is_
 from sqlalchemy.testing import is_false
 from sqlalchemy.testing import is_true
 
 
-class TestInstrumentDeclarative(fixtures.TestBase):
-    def test_ok(self):
-        class Foo:
-            __tablename__ = "foo"
-            id = sa.Column(sa.Integer, primary_key=True)
-
-        meta = sa.MetaData()
-        reg = {}
-        with expect_deprecated_20(
-            "the instrument_declarative function is deprecated"
-        ):
-            instrument_declarative(Foo, reg, meta)
-
-        mapper = sa.inspect(Foo)
-        is_true(isinstance(mapper, Mapper))
-        is_(mapper.class_, Foo)
-
-
 class DeprecatedImportsTest(fixtures.TestBase):
     def _expect_warning(self, name):
         return expect_deprecated_20(