Plots.resize: delete old promise resolver if present
Plots.resize: delete old promise resolver if present

plotly/plotly.js,etpinard/plotly.js,plotly/plotly.js,aburato/plotly.js,plotly/plotly.js,plotly/plotly.js,etpinard/plotly.js,aburato/plotly.js,etpinard/plotly.js