drop deprecated `transforms` in v3

https://github.com/plotly/plotly.js/blob/206d117e01a79ff63b5a8f5f76d97e2b095e8ac5/src/plots/attributes.js#L217-L225

	transforms: {
	_isLinkedToArray: 'transform',
	editType: 'calc',
	description: [
	'WARNING: All transforms are deprecated and may be removed from the API in next major version.',
	'An array of operations that manipulate the trace data,',
	'for example filtering or sorting the data arrays.'
	].join(' ')
	},

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