Remove the .issues-directory from swak4Foam as it only makes sense in the mercurial-version

git-svn-id: svn://svn.code.sf.net/p/openfoam-extend/svn/trunk/Breeder_1.7/libraries/swak4Foam@2030 e4e07f05-0c2f-0410-a05a-b8ba57e0c909