Remove superfluous #includes, parser.h now includes its prerequisites.

Originally committed as revision 8905 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/dca_parser.c

@@ -26,7 +26,6 @@
  * @file dca_parser.c
  */
 
-#include "avcodec.h"
 #include "parser.h"
 #include "dca.h"
 

libavcodec/h261_parser.c

@@ -25,7 +25,6 @@
  * h261codec.
  */
 
-#include "dsputil.h"
 #include "parser.h"
 
 

libavcodec/vc1_parser.c

@@ -24,7 +24,7 @@
  * @file vc1_parser.c
  * VC-1 and WMV3 parser
  */
-#include "dsputil.h"
+
 #include "parser.h"
 #define VC1_PARSER_ONLY
 #include "vc1.h"