Removed unused constants

Except for SDL_bmp.c where they are historically interesting and I've left them in.

src/video/SDL_RLEaccel.c

@@ -90,11 +90,6 @@
 #include "SDL_blit.h"
 #include "SDL_RLEaccel_c.h"
 
-/*
-#ifndef MAX
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
-#endif
-*/
 #ifndef MIN
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 #endif

src/video/SDL_bmp.c

@@ -43,8 +43,8 @@
 /* Compression encodings for BMP files */
 #ifndef BI_RGB
 #define BI_RGB      0
-/* #define BI_RLE8     1 */
-/* #define BI_RLE4     2 */
+#define BI_RLE8     1
+#define BI_RLE4     2
 #define BI_BITFIELDS    3
 #endif
 

src/video/x11/SDL_x11opengl.c

@@ -519,18 +519,6 @@ X11_GL_GetVisual(_THIS, Display * display, int screen)
     return vinfo;
 }
 
-#if 0
-#ifndef GLXBadContext
-#define GLXBadContext 0
-#endif
-#ifndef GLXBadFBConfig
-#define GLXBadFBConfig 9
-#endif
-#ifndef GLXBadProfileARB
-#define GLXBadProfileARB 13
-#endif
-#endif
-
 static int (*handler) (Display *, XErrorEvent *) = NULL;
 static const char *errorHandlerOperation = NULL;
 static int errorBase = 0;

src/video/x11/SDL_x11window.c

@@ -44,7 +44,6 @@
 
 #define _NET_WM_STATE_REMOVE    0l
 #define _NET_WM_STATE_ADD       1l
-/* #define _NET_WM_STATE_TOGGLE    2l */
 
 static Bool isMapNotify(Display *dpy, XEvent *ev, XPointer win)
 {