CCM-12896: Don't run npm install as part of python class generation

Author: gareth-allan

.github/workflows/stage-2-test.yaml

@@ -58,6 +58,7 @@ jobs:
       - name: "Generate dependencies"
         run: |
           npm run generate-dependencies
+          git diff --exit-code
   test-unit:
     name: "Unit tests"
     runs-on: ubuntu-latest

src/python-schema-generator/Makefile

@@ -14,9 +14,6 @@ install:
 	@echo "Installing Python production dependencies..."
 	@pip install -r requirements.txt
 	@echo "Production dependencies installed!"
-	@echo "Installing Node production dependencies..."
-	@npm install
-	@echo "Node production dependencies installed!"
 
 # Install development dependencies
 install-dev: