syntax writer that removes the whitespaces from a syntax node. Parts of this implementation are based on https://github.com/JosefPihrt/Pihrtsoft.CodeAnalysis/blob/master/source/Pihrtsoft.CodeAnalysis.Common/CSharp/Removers/WhitespaceOrEndOfLineRemover.cs from Josef Pihrt, licensed under the Apache License, Version 2.0