Remove all animation-related functionality.

Author: tshead

docs/installation.rst

@@ -26,15 +26,6 @@ Ghostscript, which can't be installed via pip.  If you use `Conda <https://docs.
 
     $ conda install ghostscript
 
-ffmpeg
-------
-
-If you plan to render animated Toyplot figures as MP4 files, you'll need
-ffmpeg, which also can't be installed via pip.  If you use `Conda <https://docs.conda.io/en/latest/>`_
-(again, strongly recommended), you can install it as follows::
-
-    $ conda install ffmpeg
-
 .. _documentation:
 
 Documentation

docs/reference.rst

@@ -24,7 +24,6 @@ Python API
     toyplot.locator.rst
     toyplot.mark.rst
     toyplot.marker.rst
-    toyplot.mp4.rst
     toyplot.pdf.rst
     toyplot.png.rst
     toyplot.projection.rst

docs/toyplot.mp4.rst

@@ -3,7 +3,6 @@
 # rights in this software.
 
 from behave import *
-import nose.tools
 
 import os
 import pkgutil

docs/tutorial.ipynb

@@ -336,7 +336,7 @@ def read_png(fobj):
     if meta["bitdepth"] == 1:
         image = numpy.resize(numpy.vstack(pixels), (height, width, planes))
     elif meta["bitdepth"] == 8:
-        image = numpy.resize(numpy.vstack(map(numpy.uint8, pixels)), (height, width, planes))
+        image = numpy.resize(numpy.vstack(list(map(numpy.uint8, pixels))), (height, width, planes))
     return image