LCL, CoolBar: remove unused TCoolBands.Notify method

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40465 4005530d-fff6-0310-9dd1-cebe43e6787f
LCL: cleanup

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@40466 4005530d-fff6-0310-9dd1-cebe43e6787f