Update creating-codeql-databases.rst

Always use `/p:UseSharedCompilation=false` for `msbuild` / `dotnet build`.

Author: hvitved

docs/codeql/codeql-cli/creating-codeql-databases.rst

@@ -208,14 +208,9 @@ commands that you can specify for compiled languages.
 
      codeql database create cpp-database --language=cpp --command=make
 
-- C# project built using ``dotnet build`` (.NET Core 3.0 or later)::
+- C# project built using ``dotnet build``::
 
-     codeql database create csharp-database --language=csharp --command='dotnet build /t:rebuild' 
-
-  On Linux and macOS (but not Windows), you need to disable shared compilation when building C# projects
-  with .NET Core 2 or earlier, so expand the command to::
-
-     codeql database create csharp-database --language=csharp --command='dotnet build /p:UseSharedCompilation=false /t:rebuild'
+     codeql database create csharp-database --language=csharp --command='dotnet build /p:UseSharedCompilation=false /t:rebuild' 
 
 - Go project built using the ``COEQL_EXTRACTOR_GO_BUILD_TRACING=on`` environment variable::