duplicated code for set1 in set2 section

[liuxuan30]

duplicated code for set1 in set2 section

[codecov-io]

Codecov Report

Merging #2872 into master will decrease coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2872      +/-   ##
=========================================
- Coverage   19.64%   19.6%   -0.05%     
=========================================
  Files         113     113              
  Lines       13792   13841      +49     
=========================================
+ Hits         2709    2713       +4     
- Misses      11083   11128      +45

Impacted Files	Coverage Δ
Source/Charts/Highlight/Highlight.swift	0% <0%> (ø)	⬆️
.../Charts/Renderers/Scatter/CrossShapeRenderer.swift	0% <0%> (ø)	⬆️
...urce/Charts/Renderers/Scatter/XShapeRenderer.swift	0% <0%> (ø)	⬆️
...rts/Renderers/Scatter/ChevronUpShapeRenderer.swift	0% <0%> (ø)	⬆️
...Charts/Renderers/Scatter/SquareShapeRenderer.swift	0% <0%> (ø)	⬆️
...s/Renderers/Scatter/ChevronDownShapeRenderer.swift	0% <0%> (ø)	⬆️
...Charts/Renderers/Scatter/CircleShapeRenderer.swift	0% <0%> (ø)	⬆️
Source/Charts/Components/Description.swift	100% <0%> (ø)	⬆️
Source/Charts/Filters/DataApproximator.swift	0% <0%> (ø)	⬆️
...arts/Renderers/Scatter/TriangleShapeRenderer.swift	0% <0%> (ø)	⬆️

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