Update Kooboo.CMS.Content.Persistence.SqlServer.csproj

comment the copy command in the build event.
Merge pull request #16 from ZhiGuang/master

Fixed issue #15
Merge pull request #21 from Kooboo/dd643b697f23633025fdc1f00071a25f0b30f156

comment the copy command in the build event.
Merge pull request #2 from Kooboo/master

update