More sed cleansing on airoscript-ng

git-svn-id: http://svn.aircrack-ng.org/branch/airoscript-ng@2324 28c6078b-6c39-48e3-add9-af49d547ecab
Latest sed cleansing on airoscript-ng. This probably does not work, check it later.

git-svn-id: http://svn.aircrack-ng.org/branch/airoscript-ng@2325 28c6078b-6c39-48e3-add9-af49d547ecab