Remove manual ffmpeg logs suppression in tests

[juliendargelos]

Since PR #25 has been merged, ffmpeg logs are now wrapped into the fsv logger. We don't need to manually suppress them in the tests:

fsv/tests/setup.ts

Lines 3 to 7 in 2e1ae4c

	import { Log } from 'node-av'
	import { AV_LOG_QUIET } from 'node-av/constants'
	// Suppress ffmpeg internal logs (encoder stats, codec info, etc.) during tests
	Log.setLevel(AV_LOG_QUIET)

[juliendargelos]

Actually this is still a problem because of this node-av issue.