Allow trimming of all characters inside quotes

[Ivan Ivon]

Sync with JoshClose/CsvHelper#1913

Test file can be found at JoshClose/CsvHelper#1782 (comment)

Remove:

CsvLINQPadDriver/Src/CsvLINQPadDriver/Extensions/FileExtensions.cs

Lines 530 to 534 in cbbeb22

 var whiteSpaceChars = WhiteSpaceChars 
     .Except(csvConfiguration.Delimiter.Length == 1 
                 ? new[] { csvConfiguration.Delimiter.First() } 
                 : Array.Empty<char>()) 
     .ToArray();