chore: fix librarian commit, which added py3.7 and 3.8 support back partially

Author: abbrowne126

.librarian/generator-input/librarian.py

@@ -338,10 +338,10 @@
     samples=True,
     cov_level=99,
     versions=gcp.common.detect_versions(path="./google", default_first=True),
-    unit_test_python_versions=["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"],
+    unit_test_python_versions=["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"],
     unit_test_dependencies=["flaky"],
     system_test_python_versions=["3.12"],
-    system_test_external_dependencies=["psutil","flaky"],
+    system_test_external_dependencies=["psutil", "flaky"],
 )
 s.move(templated_files, excludes=[".coveragerc", ".github/**", "README.rst", "docs/**", ".kokoro/**"])
 

mypy.ini

@@ -1,3 +1,3 @@
 [mypy]
-python_version = 3.7
+python_version = 3.14
 namespace_packages = True

testing/constraints-3.7.txt

@@ -15,12 +15,8 @@
 #
 import os
 
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
+
+import mock
 
 import grpc
 from grpc.experimental import aio

testing/constraints-3.8.txt

@@ -15,12 +15,8 @@
 #
 import os
 
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
+
+import mock
 
 import grpc
 from grpc.experimental import aio

tests/unit/gapic/pubsub_v1/test_publisher.py

@@ -16,12 +16,7 @@
 import os
 import warnings
 
-# try/except added for compatibility with python < 3.8
-try:
-    from unittest import mock
-    from unittest.mock import AsyncMock  # pragma: NO COVER
-except ImportError:  # pragma: NO COVER
-    import mock
+import mock
 
 import grpc
 from grpc.experimental import aio