examples: remove unused files

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43033 4005530d-fff6-0310-9dd1-cebe43e6787f
examples: convert an example to FPC resources

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43034 4005530d-fff6-0310-9dd1-cebe43e6787f
doceditor: remove unused lrs

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@43035 4005530d-fff6-0310-9dd1-cebe43e6787f