Remove redis from macos CI workflow (#744)

We should use the redis within the payjoin-test-utils and not install
redis seperately.

I think the issue cropped up parallel to the fact that macos worker does
not natively have access to docker so I was having trouble getting those
both solved at the same time but as it turns out we can simply remove
the redis dep directly from the CI workflow without any additional
changes!

Author: spacebear21

.github/workflows/python.yml

@@ -90,23 +90,6 @@ jobs:
       - name: Setup Docker on macOS
         uses: douglascamata/[email protected]
 
-      - name: "Install Redis"
-        run: |
-          brew update
-          brew install redis
-
-      - name: "Start Redis"
-        run: |
-          redis-server --daemonize yes
-          for i in {1..10}; do
-            if redis-cli ping | grep -q PONG; then
-              echo "Redis is ready"
-              break
-            fi
-            echo "Waiting for Redis..."
-            sleep 1
-          done
-
       - name: "Use cache"
         uses: Swatinem/rust-cache@v2