removed piping of stderr in collect targets

Summary: I'm not sure why this was in place to begin with, but we need to remove it for debugging

Test Plan: N/A

Reviewers: anupc

Reviewed By: anupc

Subscribers: kylec

Differential Revision: https://tails.corp.dropbox.com/D225044

changes/utils/bazel_setup.py

@@ -30,7 +30,7 @@
 (sudo apt-get -y update || sudo apt-get -y update) >/dev/null 2>&1
 sudo apt-get install -y --force-yes {bazel_apt_pkgs} python >/dev/null 2>&1
 
-python -c "{script}" "{bazel_root}" "{bazel_targets}" "{bazel_exclude_tags}" "{max_jobs}" 2> /dev/null
+python -c "{script}" "{bazel_root}" "{bazel_targets}" "{bazel_exclude_tags}" "{max_jobs}"
 """.strip()