Remove checkout step from upload_data workflow

Removed checkout step from upload job in workflow.

.github/workflows/upload_data.yml

@@ -7,10 +7,7 @@ on:
 jobs:
   upload:
     runs-on: self-hosted
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v4
-        
+    steps:      
       - name: Install dependencies
         run: |
           pip install gspread google-auth --break-system-packages