"Copy text" is a Visual Studio Code extension that offers more copy options: Copies text without colors, optionally adds metainfo like document name and date.
Commands
Copy text without syntax highlighting
press Ctrl+Shift+C
or select 'Copy Without Syntax Highlighting' from your context menu
or select 'Copy Without Syntax Highlighting' from command palette (F1)
Copy text with metainfo
select 'Copy Text With Metainfo' from command palette (F1)