chore: revert sqlalchemy changes to unblock PR

Author: chalmerlowe

packages/sqlalchemy-bigquery/.coveragerc

@@ -22,7 +22,7 @@ omit =
   sqlalchemy_bigquery/requirements.py
 
 [report]
-fail_under = 98
+fail_under = 100
 show_missing = True
 exclude_lines =
     # Re-enable the standard pragma

packages/sqlalchemy-bigquery/noxfile.py

@@ -119,16 +119,6 @@
 }
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
-# Path to the centralized mypy configuration file at the repository root.
-# Search upwards to support running nox from both monorepo packages and integration test goldens.
-MYPY_CONFIG_FILE = next(
-    (
-        str(p / "mypy.ini")
-        for p in CURRENT_DIRECTORY.parents
-        if (p / "mypy.ini").exists()
-    ),
-    str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
-)
 
 
 def _calculate_duration(func):
@@ -477,7 +467,7 @@ def cover(session):
     test runs (not system test runs), and then erases coverage data.
     """
     session.install("coverage", "pytest-cov")
-    session.run("coverage", "report", "--show-missing")
+    session.run("coverage", "report", "--show-missing", "--fail-under=100")
 
     session.run("coverage", "erase")
 

packages/sqlalchemy-spanner/noxfile.py

@@ -82,17 +82,6 @@ class = StreamHandler
 RUFF_VERSION = "ruff==0.14.14"
 LINT_PATHS = ["google", "tests", "noxfile.py", "setup.py", "samples"]
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
-# Path to the centralized mypy configuration file at the repository root.
-# Search upwards to support running nox from both monorepo packages and integration test goldens.
-MYPY_CONFIG_FILE = next(
-    (
-        str(p / "mypy.ini")
-        for p in CURRENT_DIRECTORY.parents
-        if (p / "mypy.ini").exists()
-    ),
-    str(CURRENT_DIRECTORY.parent.parent / "mypy.ini"),
-)
-
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "pytest",