update range slider tests
update range slider tests

- rm now useless yaxis mocks
- add better fixedrange logic test cases

asolagmbh/plotly.js,etpinard/plotly.js,aburato/plotly.js,iongroup/plotly.js,aburato/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,iongroup/plotly.js,iongroup/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,asolagmbh/plotly.js