Error on clean build of master

[KevinRansom]

I see this build error on a clean build of master branch.

C:\kevinransom\fsharp\vsintegration\src\FSharp.Editor\LanguageService\FSharpProjectOptionsManager.fs(219,56): error FS0
039: The type 'ConcurrentDictionary<TKey,TValue>' does not define the field, constructor or member 'Remove'. Maybe you
want one of the following:↔   RemoveNode↔   RemoveNodes [C:\kevinransom\fsharp\vsintegration\src\FSharp.Editor\FSharp.E
ditor.fsproj]
  FSharp.LanguageService -> C:\kevinransom\fsharp\artifacts\bin\FSharp.LanguageService\Release\net472\FSharp.LanguageSe
  rvice.dll

Build FAILED.

[cartermp]

#9134