Revert "Add required header #include to fix 'make checkheaders'."

config.h must not be included in that file.  The table generator runs
on the host system, but config.h describes the target.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@20620 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/mpegaudio_tablegen.h

@@ -27,7 +27,6 @@
 // do not use libavutil/mathematics.h since this is compiled both
 // for the host and the target and config.h is only valid for the target
 #include <math.h>
-#include "config.h"
 
 #define TABLE_4_3_SIZE (8191 + 16)*4
 #if CONFIG_HARDCODED_TABLES