Removed SDL_RenderSetIntegerScale() renaming note

Fixes https://github.com/libsdl-org/SDL/issues/9384

docs/README-migration.md

@@ -1134,7 +1134,6 @@ The following functions have been renamed:
 * SDL_RenderIsClipEnabled() => SDL_RenderClipEnabled()
 * SDL_RenderLogicalToWindow() => SDL_RenderCoordinatesToWindow()
 * SDL_RenderSetClipRect() => SDL_SetRenderClipRect()
-* SDL_RenderSetIntegerScale() => SDL_SetRenderIntegerScale()
 * SDL_RenderSetLogicalSize() => SDL_SetRenderLogicalPresentation()
 * SDL_RenderSetScale() => SDL_SetRenderScale()
 * SDL_RenderSetVSync() => SDL_SetRenderVSync()