linter: update some YAML whitespace issues

These were found by a later version of ansible-lint.  This should have
no effect, but just fixes some inconsistent whitespace issues.

Change-Id: I7bcde4942c97cfe743e8aba74833aeb5844c8290

playbooks/javascript/publish.yaml

@@ -2,4 +2,3 @@
   roles:
     - fetch-javascript-output
     - fetch-javascript-content-tarball
-

playbooks/pti-python-tarball/pre.yaml

@@ -3,4 +3,3 @@
     # We use ensure-pip to make sure the wheel module is installed
     - ensure-pip
     - revoke-sudo
-