fix: No need to install fvtt or build modules in workflow

foundryvtt-cli is already part of the dev dependencies, there's no need to
install it again.

The build step also builds the packs.  The build packs step was just building
them twice.

.github/workflows/test-release.yml

@@ -41,13 +41,6 @@ jobs:
       - name: Install
         run: npm install
 
-      - name: install fvtt cli
-        id: fvtt-install
-        run: npm install -g @foundryvtt/foundryvtt-cli
-
-      - name: Build packs
-        run: npm run build:packs
-
       - name: Build
         run: npm run build