Remove ffmpeg_subprocess_test.py (already implemented as FFmpegOutput)

tests/ffmpeg_subprocess_test.py

@@ -1,31 +0,0 @@
-import glob
-import shlex
-import subprocess
-
-templates = ['ffplay -autoexit -f image2pipe -framerate 60 -i -']
-args = [arg
-        for template in templates
-        for arg in shlex.split(template)]
-
-popen = subprocess.Popen(args, stdin=subprocess.PIPE)
-stream = popen.stdin
-
-imgs = glob.glob('images/*.png')
-imgs.sort()
-for img in imgs * 100:
-    with open(img, 'rb') as f:
-        stream.write(f.read())    # FIXME https://docs.python.org/3/library/subprocess.html#subprocess.Popen.stdin
-
-# Warning: Use communicate() rather than .stdin.write, .stdout.read or .stderr.read
-# to avoid deadlocks due to any of the other OS pipe buffers filling up and blocking
-# the child process.
-
-# communicate(): Interact with process: Send data to stdin. Read data from stdout and
-# stderr, until end-of-file is reached.
-
-# nope instant reject
-
-# https://stackoverflow.com/questions/9886654/difference-between-communicate-and-stdin-write-stdout-read-or-stderr-read
-
-stream.close()
-popen.wait()