remove intro
remove intro


Former-commit-id: b7283cb255bb582caf1868119d3abe38d3e40dd6
Former-commit-id: 4da1feb1f1f4fb34a9b53c3326b2f5bcdcd40671
dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy,dssg/wikienergy