SDL_config_os2.h: remove some duplicated lines.
diff --git a/include/SDL_config_os2.h b/include/SDL_config_os2.h
index b492662..1d830f2 100644
--- a/include/SDL_config_os2.h
+++ b/include/SDL_config_os2.h
@@ -173,12 +173,8 @@
/* #undef HAVE_LOGF */
#define HAVE_LOG10 1
/* #undef HAVE_LOG10F */
-/* #undef HAVE_LROUND */
-/* #undef HAVE_LROUNDF */
#define HAVE_POW 1
/* #undef HAVE_POWF */
-/* #undef HAVE_ROUND */
-/* #undef HAVE_ROUNDF */
#define HAVE_SIN 1
/* #undef HAVE_SINF */
/* #undef HAVE_SCALBN */