[windows-only] remove the always true color hack for StX

[Patrik Svestka]

It appears that on windows Smalltalk/X is using a hack in order to force only 24bit color depth.

I think StX should adjust to the user's depth. It should not be hardcoded.

The valid excerpts from WinWorkstation.st:

#define ALWAYSTRUECOLOR

#ifdef ALWAYSTRUECOLOR
    __depth = 24;  /* its a hack */
#else
    __depth = __realDepth;
    if (__depth == 15)
	__depth = 16;
#endif

[Patrik Svestka]

You can always check with the following Smalltalk code:

Display depth or Screen current depth