[#69697126] Removed ABB.SrcML.Core. Clients should refer directly to ABB.SrcML.
Removed NSubstitute from ABB.SrcML.Test (it wasn't being used).
Removed ABB.SrcML.Data-Monolithic.Test from packages.
[#69697126] Removed ABB.SrcML.VisualStudio.Interfaces. Clients should refer directly to ABB.SrcML.VisualStudio.SrcMLService.dll
[#69697126] Removed ABB.SrcML.Data.Core. Clients should refer directly to ABB.SrcML.Data.