Remove vestiges of the TAKE_FOCUS window event

The event was removed, so remove the rename define and update the coccinelle script.

build-scripts/SDL_migration.cocci

@@ -2062,7 +2062,7 @@ expression e;
 @@
 @@
 - SDL_WINDOWEVENT_TAKE_FOCUS
-+ SDL_EVENT_WINDOW_TAKE_FOCUS
++ /* FIXME MIGRATION: SDL_WINDOWEVENT_TAKE_FOCUS has been removed; there is no replacement. */ 0
 @@
 @@
 - SDL_WINDOWEVENT_HIT_TEST

include/SDL3/SDL_oldnames.h

@@ -170,7 +170,6 @@
 #define SDL_WINDOWEVENT_RESTORED SDL_EVENT_WINDOW_RESTORED
 #define SDL_WINDOWEVENT_SHOWN SDL_EVENT_WINDOW_SHOWN
 #define SDL_WINDOWEVENT_SIZE_CHANGED SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED
-#define SDL_WINDOWEVENT_TAKE_FOCUS SDL_EVENT_WINDOW_TAKE_FOCUS
 #define SDL_eventaction SDL_EventAction
 
 /* ##SDL_gamecontroller.h */
@@ -808,7 +807,6 @@
 #define SDL_WINDOWEVENT_RESTORED SDL_WINDOWEVENT_RESTORED_renamed_SDL_EVENT_WINDOW_RESTORED
 #define SDL_WINDOWEVENT_SHOWN SDL_WINDOWEVENT_SHOWN_renamed_SDL_EVENT_WINDOW_SHOWN
 #define SDL_WINDOWEVENT_SIZE_CHANGED SDL_WINDOWEVENT_SIZE_CHANGED_renamed_SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED
-#define SDL_WINDOWEVENT_TAKE_FOCUS SDL_WINDOWEVENT_TAKE_FOCUS_renamed_SDL_EVENT_WINDOW_TAKE_FOCUS
 #define SDL_eventaction SDL_eventaction_renamed_SDL_EventAction
 
 /* ##SDL_gamecontroller.h */