Filter out series with all NaN

[datability-io]

CATEGORY

Choose one

• Bug Fix
• Enhancement (new features, refinement)
• Refactor
• Add tests
• Build / Development Environment
• Documentation

SUMMARY

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TEST PLAN

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

REVIEWERS

[codecov-io]

Codecov Report

Merging #7332 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #7332   +/-   ##
=======================================
  Coverage   64.89%   64.89%           
=======================================
  Files         428      428           
  Lines       20934    20934           
  Branches     2330     2330           
=======================================
  Hits        13585    13585           
  Misses       7225     7225           
  Partials      124      124

Impacted Files	Coverage Δ
superset/viz.py	71.53% <100%> (ø)	⬆️

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