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, 7 insertions, 10 deletions

diff --git a/lib/sqlalchemy/testing/profiling.py b/lib/sqlalchemy/testing/profiling.py
index 2761d4987..6ccfe4ea7 100644
--- a/lib/sqlalchemy/testing/profiling.py
+++ b/lib/sqlalchemy/testing/profiling.py
@@ -238,21 +238,18 @@ def function_call_count(variance=0.05, times=1, warmup=0):
     # likely due to the introduction of __signature__.
 
     from sqlalchemy.util import decorator
-    from sqlalchemy.util import deprecations
-    from sqlalchemy.testing import mock
 
     @decorator
     def wrap(fn, *args, **kw):
 
-        with mock.patch.object(deprecations, "SQLALCHEMY_WARN_20", False):
-            for warm in range(warmup):
-                fn(*args, **kw)
+        for warm in range(warmup):
+            fn(*args, **kw)
 
-            timerange = range(times)
-            with count_functions(variance=variance):
-                for time in timerange:
-                    rv = fn(*args, **kw)
-                return rv
+        timerange = range(times)
+        with count_functions(variance=variance):
+            for time in timerange:
+                rv = fn(*args, **kw)
+            return rv
 
     return wrap