32956: remove ffmpeg and imagemagick from _recommended/distros/*.txt files

Author: seblabbe

build/pkgs/_recommended/distros/debian.txt

@@ -13,5 +13,5 @@ dvipng
 # to run the Jmol 3D viewer from the console and generate images for 3D plots in the documentation
 default-jdk
 # to produce animations
-ffmpeg
+# ffmpeg -- this is a separate script package
 libavdevice-dev

build/pkgs/_recommended/distros/homebrew.txt

@@ -1,8 +1,8 @@
 # To convert Jupyter notebooks to pdf:
 # pandoc -- this is a separate script package
 # To produce animations:
-ffmpeg
-imagemagick
+# ffmpeg -- this is a separate script package
+# imagemagick -- this is a separate script package
 # Homebrew's texinfo can be used to build the info files for ecl and
 # maxima but the OS X default version of texinfo cannot.
 texinfo

build/pkgs/_recommended/distros/macports.txt

@@ -1,8 +1,8 @@
 # To convert Jupyter notebooks to pdf:
 # pandoc -- this is a separate script package
 # To produce animations:
-ffmpeg
-imagemagick
+# ffmpeg -- this is a separate script package
+# imagemagick -- this is a separate script package
 # MacPorts's texinfo can be used to build the info files for ecl and
 # maxima but the OS X default version of texinfo cannot.
 texinfo