Remove unused stuff from config.h.in

/* src/config.h.in.  Generated from configure.ac by autoheader.  */

/* Define to 1 if you have the `jpeg' library (-ljpeg). */

#undef HAVE_LIBJPEG

/* Define to 1 if you have the `Xext' library (-lXext). */

#undef HAVE_LIBXEXT

/* Define to 1 if you have the `Xinerama' library (-lXinerama). */

#undef HAVE_LIBXINERAMA

/* Name of package */

#undef PACKAGE

/* Define to the address where bug reports for this package should be sent. */

#undef PACKAGE_BUGREPORT

/* Define to the full name of this package. */

#undef PACKAGE_NAME

/* Define to the full name and version of this package. */

#undef PACKAGE_STRING

/* Define to the one symbol short name of this package. */

#undef PACKAGE_TARNAME

/* Define to the version of this package. */

#undef PACKAGE_VERSION

/* Version number of package */

#undef VERSION