Clean up bad layout files in zuul tests

Clean up the bad layout files in the zuul tests by removing a redundant
file (bad_pipeline and bad_pipeline1.yaml were identical). Annotate the
reason the layout is bad in each file. Finally remove a redundant swift
section. Both bad switf sections were failing for the same reason, a
missing name entry.

Change-Id: I0fd09da1fb0ec7443fa7d12a3b31809546a01afd
diff --git a/tests/fixtures/layouts/bad_pipelines7.yaml b/tests/fixtures/layouts/bad_pipelines7.yaml
index 7517b9a..e2db495 100644
--- a/tests/fixtures/layouts/bad_pipelines7.yaml
+++ b/tests/fixtures/layouts/bad_pipelines7.yaml
@@ -1,4 +1,5 @@
 pipelines:
+  # The pipeline must have a name.
   - manager: IndependentPipelineManager
 
 projects: