[maven-release-plugin] rollback the release of simplemagic-1.6
[maven-release-plugin] rollback the release of simplemagic-1.6

yswang0927/simplemagic,j256/simplemagic,yswang0927/simplemagic,j256/simplemagic,yswang0927/simplemagic,j256/simplemagic,j256/simplemagic,yswang0927/simplemagic