simplify test setup: remove TcpForwarder tests and custom markers

- Remove test_tcp_forwarder.py (mocked unit tests not adding value)
- Remove tests/conftest.py with custom marker logic
- Remove marker definitions from pyproject.toml
- Tests are now simply run by directory path

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: whummer

utils/Makefile

@@ -38,10 +38,10 @@ test: venv      ## Run all tests
 	$(VENV_RUN); python -m pytest tests/ -v
 
 test-unit: venv ## Run unit tests only (no Docker required)
-	$(VENV_RUN); python -m pytest tests/unit/ -v -m unit
+	$(VENV_RUN); python -m pytest tests/unit/ -v
 
 test-integration: venv ## Run integration tests (Docker required)
-	$(VENV_RUN); python -m pytest tests/integration/ -v -m integration
+	$(VENV_RUN); python -m pytest tests/integration/ -v
 
 clean-dist: clean
 	rm -rf dist/

utils/pyproject.toml

@@ -48,10 +48,6 @@ include = ["localstack_extensions*"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]
-markers = [
-    "unit: Unit tests (no Docker/LocalStack required)",
-    "integration: Integration tests (Docker required, no LocalStack)",
-]
 filterwarnings = [
     "ignore::DeprecationWarning",
 ]