fix: simplify ninja CI (#1161)

Author: mraszyk

.github/workflows/ninja_pr_checks.yml

@@ -103,6 +103,5 @@ jobs:
       - name: Start dfx and build project
         working-directory: ${{ matrix.example.path }}
         run: |
-          # Note: Running these commands in the same step and with verbose output magically fixes the 502 Bad Gateway issue in dfx/pocketic for the LLM Chatbot example
-          RUST_LOG=trace dfx start --background --verbose
+          dfx start --background
           dfx deploy