Duplicated metric in Project Metrics view (in metrics filter)

[lidix91]

Describe the bug
In the project metrics view, the historical view has a filter to select concrete metrics.

In this filter appear all the metrics, it is the list of team and project metrics. The team metrics appear more than once. If one team metric is selected, the view do not show any figure (as expected)

To Reproduce
Steps to reproduce the behavior:

1. Go to Project Metrics
2. Click on "historical"
3. Use the METRICS filter

Expected behavior
Only project metrics appear in this list.