HM: remove outdated README.mediawiki
HM: remove outdated README.mediawiki

git-svn-id: b9fd73d9eafdd47b4b433ab50911a2bc33c03bd0@22028 e7cb0379-d053-0e4b-a1ac-43c7dbffadbe

kii-dev-jenkins/KiiFileStorageSampleApp