Removes license file reference

Author: arpadbarta

LiteDB/LiteDB.csproj

@@ -17,7 +17,6 @@
         <PackageId>LiteDB</PackageId>
         <PackageTags>database nosql embedded</PackageTags>
         <PackageIcon>icon_64x64.png</PackageIcon>
-        <PackageLicenseFile>LICENSE</PackageLicenseFile>
         <PackageReadmeFile>README.md</PackageReadmeFile>
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
         <PackageProjectUrl>https://www.litedb.org</PackageProjectUrl>