remove unused proto files and grpcio dependencies

The integration tests work at the raw HTTP/2 frame level and don't
need generated gRPC stubs. This simplifies the test setup.

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

Author: whummer

.github/workflows/utils.yml

@@ -59,10 +59,8 @@ jobs:
           cd utils
           pip install -e .[dev,test]
 
-      - name: Pull grpcbin image
-        run: docker pull moul/grpcbin
-
       - name: Run integration tests
         run: |
+          docker pull moul/grpcbin &
           cd utils
           make test-integration

utils/Makefile

@@ -43,14 +43,7 @@ test-unit: venv ## Run unit tests only (no Docker required)
 test-integration: venv ## Run integration tests (Docker required)
 	$(VENV_RUN); python -m pytest tests/integration/ -v -m integration
 
-proto: venv     ## Generate Python stubs from .proto files
-	$(VENV_RUN); python -m grpc_tools.protoc \
-		-I./proto \
-		--python_out=./tests/proto \
-		--grpc_python_out=./tests/proto \
-		./proto/*.proto
-
 clean-dist: clean
 	rm -rf dist/
 
-.PHONY: clean clean-dist dist install publish usage venv format lint test test-unit test-integration proto
+.PHONY: clean clean-dist dist install publish usage venv format lint test test-unit test-integration

utils/proto/grpcbin.proto

@@ -39,8 +39,6 @@ dev = [
 test = [
     "pytest>=7.0",
     "pytest-timeout>=2.0",
-    "grpcio>=1.50.0",
-    "grpcio-tools>=1.50.0",
     "localstack",
     "jsonpatch",
 ]