scripts: ch-trace-visualiser.py: remove unused import 'xml'

Unused import 'xml' is redefined at:

> xml = ET.ElementTree(element=svg)

Hence, remove unused xml import.

Signed-off-by: Ruslan Mstoi <

scripts: ch-trace-visualiser.py: remove unused import 'xml'

Unused import 'xml' is redefined at:

> xml = ET.ElementTree(element=svg)

Hence, remove unused xml import.

Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>

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scripts: Add tracing visualisation script

Signed-off-by: Rob Bradford <robert.bradford@intel.com>