Remove widgets on Board

It seems that this list "Board.widgets" is never used, so we could remove it.

added easy sao tryton type::behavior + 1 deleted label

Added review for sao.

added 1 deleted label and removed 1 deleted label

assigned to @prayashm

We need now the patch for tryton

Added review for Tryton

New changeset 4daf166b0d41 by Prayash Mohapatra in branch 'default':
Remove unused Board.widgets list
http://hg.tryton.org/tryton/rev/4daf166b0d41

added 1 deleted label and removed 1 deleted label

closed

New changeset 247e7cba7ff9 by Prayash Mohapatra in branch 'default':
Remove unused Board.widgets list
http://hg.tryton.org/sao/rev/247e7cba7ff9