Don't import ffmpeg.nim for nimscript

Author: WyattBlue

src/ffmpeg.nim

@@ -49,9 +49,6 @@ converter toAVRational*(s: string): AVRational =
 
   return rational
 
-proc av_get_known_color_name*(color_idx: cint, rgbp: ptr ptr uint8): cstring
-    {.importc, header: "<libavutil/parseutils.h>".}
-
 type
   AVMediaType* = cint
   AVDiscard* = cint

src/util/color.nim

@@ -1,5 +1,7 @@
 import std/[strutils, strformat, parseutils]
-import ../ffmpeg
+
+proc av_get_known_color_name(color_idx: cint, rgbp: ptr ptr uint8): cstring
+    {.importc, header: "<libavutil/parseutils.h>".}
 
 type RGBColor* = object
   red*, green*, blue*: uint8