remove azure pipelines-specific debug statement

Author: pietroalbini

src/ci/init_repo.sh

@@ -1,9 +1,5 @@
 #!/usr/bin/env bash
 
-# FIXME(61301): we need to debug spurious failures with this on Windows on
-# Azure, so let's print more information in the logs.
-set -x
-
 set -o errexit
 set -o pipefail
 set -o nounset