remove system tests from prerelease_deps

Author: ohmayr

packages/google-cloud-pubsub/noxfile.py

@@ -532,30 +532,3 @@ def prerelease_deps(session, protobuf_implementation):
             "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
         },
     )
-
-    system_test_path = os.path.join("tests", "system.py")
-    system_test_folder_path = os.path.join("tests", "system")
-
-    # Only run system tests if found.
-    if os.path.exists(system_test_path):
-        session.run(
-            "py.test",
-            "--verbose",
-            f"--junitxml=system_{session.python}_sponge_log.xml",
-            system_test_path,
-            *session.posargs,
-            env={
-                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-            },
-        )
-    if os.path.exists(system_test_folder_path):
-        session.run(
-            "py.test",
-            "--verbose",
-            f"--junitxml=system_{session.python}_sponge_log.xml",
-            system_test_folder_path,
-            *session.posargs,
-            env={
-                "PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION": protobuf_implementation,
-            },
-        )