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_projects2.yaml b/tests/fixtures/layouts/bad_projects2.yaml
index b91ed9d..9291cc9 100644
--- a/tests/fixtures/layouts/bad_projects2.yaml
+++ b/tests/fixtures/layouts/bad_projects2.yaml
@@ -5,5 +5,6 @@
 projects:
   - name: foo
     check:
+      # Indentation is one level too deep on the last line.
       - test
         - foo