Remove has_requirements
Remove has_requirements

last reference removed in 893f0b002905550f9d54cb01601a4bd0d0275f28

xavfernandez/pip,rouge8/pip,pfmoore/pip,sbidoul/pip,pypa/pip,xavfernandez/pip,pfmoore/pip,pypa/pip,sbidoul/pip,rouge8/pip,pradyunsg/pip,pradyunsg/pip,rouge8/pip,xavfernandez/pip