Remove the name of the file from the @file doxy, it is unnecessary and

inconsistent with the other files.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@23122 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavfilter/vf_pad.c

@@ -20,7 +20,7 @@
  */
 
 /**
- * @file libavfilter/vf_pad.c
+ * @file
  * video padding filter
  */