Remove prop-types

[anajavi]

This drops prop-types entirely as they have been deprecated for several years.

Should not be a breaking change as the builds have removed them anyway:

react-jsx-highcharts/babel.config.js

Lines 18 to 20 in 7b1cd9e

	if (ENV !== 'test') {
	config.plugins.push('transform-react-remove-prop-types');
	}

[codecov-commenter]

Codecov Report

Merging #354 (aad7505) into master (bc85ad5) will decrease coverage by 0.25%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #354      +/-   ##
==========================================
- Coverage   90.82%   90.56%   -0.26%     
==========================================
  Files          82       81       -1     
  Lines        1101     1071      -30     
  Branches      215      214       -1     
==========================================
- Hits         1000      970      -30     
  Misses         90       90              
  Partials       11       11              

Impacted Files	Coverage Δ
...highcharts/src/components/Annotation/Annotation.js	88.23% <ø> (-0.66%)	⬇️
...s/react-jsx-highcharts/src/components/Axis/Axis.js	100.00% <ø> (ø)
...x-highcharts/src/components/BarSeries/BarSeries.js	100.00% <ø> (ø)
...x-highcharts/src/components/BaseChart/BaseChart.js	97.72% <ø> (-0.06%)	⬇️
...react-jsx-highcharts/src/components/Chart/Chart.js	100.00% <ø> (ø)
...t-jsx-highcharts/src/components/Credits/Credits.js	100.00% <ø> (ø)
...react-jsx-highcharts/src/components/Debug/Debug.js	12.50% <ø> (-9.73%)	⬇️
...ponents/HighchartsSparkline/HighchartsSparkline.js	36.84% <ø> (-3.16%)	⬇️
...act-jsx-highcharts/src/components/Legend/Legend.js	100.00% <ø> (ø)
...t-jsx-highcharts/src/components/Loading/Loading.js	100.00% <ø> (ø)
... and 16 more

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