remove NCurses::Scrollpad::operator<<(std::ostream &(*os)(std::ostream&))

it wasn't used, also if it was, probably it
wouldn't work in this case, so bye bye.

src/scrollpad.h

@@ -116,8 +116,6 @@ namespace NCurses
 				return *this;
 			}
 			
-			Scrollpad &operator<<(std::ostream &(*os)(std::ostream &));
-			
 #			ifdef _UTF8
 			bool SetFormatting(short vb, const std::string &s, short ve, bool for_each = 1) { return SetFormatting(vb, ToWString(s), ve, for_each); }
 			Scrollpad &operator<<(const std::string &s);