Prior to this CL, we have:

```
Running Python 2 presubmit upload checks ...

Python 2 presubmit checks passed.
Running Python 3 presubmit upload checks ...

Presubmit checks took 10.2s to calculate.

Python 3 presubmit checks passed.
 ios/chrome/browser/... | 20 +++++++++-----------
...
```

The first two checks are harder to parse with the newlines. This CL removes
them:

```
Running Python 2 presubmit upload checks ...
Python 2 presubmit checks passed.

Running Python 3 presubmit upload checks ...
Presubmit checks took 10.2s to calculate.
Python 3 presubmit checks passed.

 ios/chrome/browser/... | 20 +++++++++-----------
...
```

Change-Id: Iaf7ac4b203c401f60d74884fd9bdd3ba4ee12c20
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3512873Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Louis Romero <lpromero@chromium.org>