remove two obsolete functions.

Change-Id: If9358bbcae8d51bf0f456bc5b0a499cc6a1a28ee
Merge "remove two obsolete functions."
Ensure SDL_LDLIBS is properly used when linking SDL.

This simple patch ensures that SDL_LDLIBS is used to list the system
libraries needed to link SDL to executables. On Windows, this also
moves the -lvfw32 from Makefile.android to sdl/sources.make, its
logical place.

Change-Id: Ibdd1c6753e1f9caf21ab6dacaa27de65a59c73eb
Merge "Ensure SDL_LDLIBS is properly used when linking SDL."