Update build_loop.yml: remove remaining env CUSTOMIZE_APP refs

Author: bjornoleh

.github/workflows/build_loop.yml

@@ -69,8 +69,6 @@ jobs:
 
       # Customize Loop: Download and apply patches
       - name: Customize Loop
-        if: ${{ env.CUSTOMIZE_APP == 'true'}}
-        
         run: |
 
           # LoopWorkspace patches