Revert "Add fileno implementation to _LoggingOutputStream class in run_chromeos_tests.py"
Revert "Add fileno implementation to _LoggingOutputStream class in run_chromeos_tests.py"

This reverts commit 7760fd2dff7dcbfdb337c604b00bff61cc6e7d13.

Reason for revert: Need to rollback changes that build upon crrev.com/c/1611755

Original change's description:
> Add fileno implementation to _LoggingOutputStream class in run_chromeos_tests.py
> 
> Changes in crrev.com/c/1611755 require that the fileno method is implemented
> for any stream class that is used for the Typ.Host instance's stdout and stderr
> member variables. This is so that any sub process's output can be captured
> This CL will implement the method for the _LoggingOutputStream object and
> return sys.stdout's file descriptor. Any output from a sub process spawned
> by a test will go to standard out. Also the Typ.Host instance can capture this
> output.
> 
> Bug: chromium:967922
> Change-Id: I5cd82171bb154de00e7d78275105d642fb51db28
> Reviewed-on: https://chromium-review.googlesource.com/c/catapult/+/1635218
> Commit-Queue: Rakib Hasan <b8c940cea6e1ecbd15dc8d7e22b88b8c22a457f7@google.com>
> Reviewed-by: Achuith Bhandarkar <885eb1ed0dfe5e52160a872becbca30c7fb85e73@chromium.org>

TBR=885eb1ed0dfe5e52160a872becbca30c7fb85e73@chromium.org,b8c940cea6e1ecbd15dc8d7e22b88b8c22a457f7@google.com

Change-Id: I8698f8d014f7fe513a112e687fba1f9aef79a94b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:967922
Reviewed-on: https://chromium-review.googlesource.com/c/catapult/+/1637446
Reviewed-by: Achuith Bhandarkar <885eb1ed0dfe5e52160a872becbca30c7fb85e73@chromium.org>
Commit-Queue: Rakib Hasan <b8c940cea6e1ecbd15dc8d7e22b88b8c22a457f7@google.com>

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