Get rid of the function sorting in for polymorphic calls.

Get rid of the function sorting in for polymorphic calls.

The idea of this code was to sort functions according to
ticks spend executing them, but now these ticks are always
zero and therefore we fall back to sorting by AST length (or
even worse by source length) all the time, which is a bad,
arbitrary measure.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/159653003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19267 ce2b1a6d-e550-0410-aec6-3dcde31c8c00