🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Author: gcf-owl-bot[bot]

noxfile.py

@@ -19,7 +19,6 @@
 from __future__ import absolute_import
 import os
 import pathlib
-import re
 import shutil
 
 import nox
@@ -184,73 +183,6 @@ def system(session):
         )
 
 
-@nox.session(python=DEFAULT_PYTHON_VERSION)
-def prerelease(session):
-    # TODO: Geoalchemy, Shapely, Alembic from extras
-    session.install(
-        "--prefer-binary",
-        "--pre",
-        "--upgrade",
-        "google-api-core",
-        "google-cloud-bigquery",
-        "google-cloud-bigquery-storage",
-        "google-cloud-core",
-        "google-resumable-media",
-        "grpcio",
-    )
-    session.install(
-        "freezegun",
-        "google-cloud-testutils",
-        "mock",
-        "psutil",
-        "pytest",
-        "pytest-cov",
-        "pytz",
-    )
-
-    # Because we test minimum dependency versions on the minimum Python
-    # version, the first version we test with in the unit tests sessions has a
-    # constraints file containing all dependencies and extras.
-    with open(
-        CURRENT_DIRECTORY
-        / "testing"
-        / f"constraints-{UNIT_TEST_PYTHON_VERSIONS[0]}.txt",
-        encoding="utf-8",
-    ) as constraints_file:
-        constraints_text = constraints_file.read()
-
-    # Ignore leading whitespace and comment lines.
-    deps = [
-        match.group(1)
-        for match in re.finditer(
-            r"^\s*(\S+)(?===\S+)", constraints_text, flags=re.MULTILINE
-        )
-    ]
-
-    # We use --no-deps to ensure that pre-release versions aren't overwritten
-    # by the version ranges in setup.py.
-    session.install(*deps)
-    session.install("--no-deps", "-e", ".[all]")
-
-    # Print out prerelease package versions.
-    session.run("python", "-m", "pip", "freeze")
-
-    # Run all tests, except a few samples tests which require extra dependencies.
-    session.run(
-        "py.test",
-        "--quiet",
-        f"--junitxml=prerelease_unit_{session.python}_sponge_log.xml",
-        os.path.join("tests", "unit"),
-    )
-    session.run(
-        "py.test",
-        "--quiet",
-        f"--junitxml=prerelease_system_{session.python}_sponge_log.xml",
-        os.path.join("tests", "system"),
-    )
-    # TODO: should we add compliance test suite, too? It takes quite a lot longer than our other tests, though.
-
-
 @nox.session(python=SYSTEM_TEST_PYTHON_VERSIONS)
 def compliance(session):
     """Run the SQLAlchemy dialect-compliance system tests"""