ci: Disable benchmarks for "Win64 native" job

Can be reverted back after syncing the QML repository with the main one.

Author: hebasto

.github/workflows/ci.yml

@@ -235,9 +235,6 @@ jobs:
       - name: Run unit tests
         run: src\test_bitcoin.exe -l test_suite
 
-      - name: Run benchmarks
-        run: src\bench_bitcoin.exe -sanity-check
-
       - name: Run util tests
         run: py -3 test\util\test_runner.py