remove demo job from Build GH Actions workflow

Per code review request, @dineshba would prefer this be kept in a
separate file.

.github/workflows/build.yml

@@ -32,59 +32,3 @@ jobs:
 
       - name: Build
         run: go build
-
-  demo:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up Go
-        uses: actions/setup-go@v4
-        with:
-          go-version: "1.21"
-
-      - name: Build
-        run: |
-          go build -o example/tf-summarize
-
-      - name: Setup Terraform
-        uses: hashicorp/setup-terraform@v2
-        with:
-          terraform_wrapper: false
-
-      - name: Print tf-summarize version and help
-        run: |
-          ./tf-summarize -v
-          ./tf-summarize -h
-        working-directory: ./example
-
-      - name: Terraform Init
-        run: terraform init
-        working-directory: ./example
-
-      - name: Terraform Plan
-        run: |
-          terraform plan -out=tfplan -refresh=false # -refresh=false is only for demo workflow
-          terraform show -json tfplan > tfplan.json
-        working-directory: ./example
-
-      - name: summary in table format
-        run: terraform show -json tfplan | ./tf-summarize
-        working-directory: ./example
-
-      - name: summary in table format with plan JSON file passed
-        run: |
-          ./tf-summarize tfplan.json
-        working-directory: ./example
-
-      - name: summary in tree format
-        run: terraform show -json tfplan | ./tf-summarize -tree
-        working-directory: ./example
-
-      - name: summary in separate tree format
-        run: terraform show -json tfplan | ./tf-summarize -separate-tree
-        working-directory: ./example
-
-      - name: summary in draw visual tree format
-        run: terraform show -json tfplan | ./tf-summarize -tree -draw
-        working-directory: ./example