Remove unused methods from ConsoleDriver

[tig]

These methods appear to be unused:

		/// <summary>
		/// Set Colors from limit sets of colors.
		/// </summary>
		/// <param name="foreground">Foreground.</param>
		/// <param name="background">Background.</param>
		public abstract void SetColors (ConsoleColor foreground, ConsoleColor background);

		// Advanced uses - set colors to any pre-set pairs, you would need to init_color
		// that independently with the R, G, B values.
		/// <summary>
		/// Advanced uses - set colors to any pre-set pairs, you would need to init_color
		/// that independently with the R, G, B values.
		/// </summary>
		/// <param name="foregroundColorId">Foreground color identifier.</param>
		/// <param name="backgroundColorId">Background color identifier.</param>
		public abstract void SetColors (short foregroundColorId, short backgroundColorId);

		/// <summary>
		/// Disables the cooked event processing from the mouse driver.  At startup, it is assumed mouse events are cooked.
		/// </summary>
		public abstract void UncookMouse ();

		/// <summary>
		/// Enables the cooked event processing from the mouse driver
		/// </summary>
		public abstract void CookMouse ();

In all existing drivers they are either empty implementations or there are no codepaths that call them.

CursesDriver has code in SetColors but there's no code I can find that ever calls ConsoleDriver.SetColors or Driver.SetColors.

We should remove these methods me thinks, even though it might be ḃreaking change (seems very unlikely).

[BDisp]

I think that are methods come from the PDCurses. I never seen any code used by them, but might have some logic. SetColors I see in the comment that can be used for RGB, but have wrong parameters, maybe superseded by the SetAttribute. The only issue is if someone already has some driver derived from ConsoleDriver.