I have whitespace characters showing in the Visual Studio code editor, and I\'d like to remove them.
You need to turn off showing whitespace characters. Menu: Edit > Advanced > View White Space.
Ajryan is correct but depending on your profile this menu item may be obscured. The keyboard shortcut should still work though. CTRL+R,CTRL+W
If it is VS2008 then you can use "Ctrl+E, S" combination to toggle.