Remove obsolete testing file (#2087)

diff --git a/buildkite/sim.py b/buildkite/sim.py
deleted file mode 100644
index c33d9ca..0000000
--- a/buildkite/sim.py
+++ /dev/null
@@ -1,8 +0,0 @@
-import os
-
-os.environ["BUILDKITE_ORGANIZATION_SLUG"] = "bazel"
-os.environ["BUILDKITE_PIPELINE_SLUG"] = "bazel-bazel"
-os.environ["BUILDKITE_BUILD_NUMBER"] = "29509"
-
-import bazelci
-bazelci.print_shard_summary()
\ No newline at end of file