remove Node setup from GCR jobs

Author: kk-min

.github/workflows/continuous-benchmarking-image-size.yml

@@ -451,11 +451,6 @@ jobs:
         with:
           version: ">= 363.0.0"
 
-      - name: Set up Node 16.16.0
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16.16.0
-
       - name: Download client artifact
         uses: actions/download-artifact@v3
         with:
@@ -551,11 +546,6 @@ jobs:
         with:
           version: ">= 363.0.0"
 
-      - name: Set up Node 16.16.0
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16.16.0
-
       - name: Download client artifact
         uses: actions/download-artifact@v3
         with:

.github/workflows/continuous-benchmarking-runtimes.yml

@@ -197,11 +197,6 @@ jobs:
         with:
           ref: continuous-benchmarking
 
-      - name: Set up Node.js 16.16.0
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16.16.0
-
       - name: Set up Go 1.21
         if: ${{ matrix.runtime == 'go'}}
         uses: actions/setup-go@v3