Fix imports for dash >= 2
Since dash
≥ 2, dash-core-components
and dash-html-components
are
provided directly by the dash
package:
https://github.com/plotly/dash/blob/dev/CHANGELOG.md#changed-6
Since dash
≥ 2, dash-core-components
and dash-html-components
are
provided directly by the dash
package:
https://github.com/plotly/dash/blob/dev/CHANGELOG.md#changed-6