drop deprecated zauto, zmin & zmax from surface

Author: archmoj

src/traces/surface/attributes.js

@@ -288,18 +288,6 @@ colorScaleAttrs('', {
         ].join(' ')
     },
 
-    _deprecated: {
-        zauto: extendFlat({}, colorScaleAttrs.zauto, {
-            description: 'Obsolete. Use `cauto` instead.'
-        }),
-        zmin: extendFlat({}, colorScaleAttrs.zmin, {
-            description: 'Obsolete. Use `cmin` instead.'
-        }),
-        zmax: extendFlat({}, colorScaleAttrs.zmax, {
-            description: 'Obsolete. Use `cmax` instead.'
-        })
-    },
-
     hoverinfo: extendFlat({}, baseAttrs.hoverinfo),
     showlegend: extendFlat({}, baseAttrs.showlegend, {dflt: false}),
 }), 'calc', 'nested');

src/traces/surface/defaults.js

@@ -121,13 +121,6 @@ function supplyDefaults(traceIn, traceOut, defaultColor, layout) {
         coerce(contourDim + '.size');
     }
 
-    // backward compatibility block
-    if(!surfaceColor) {
-        mapLegacy(traceIn, 'zmin', 'cmin');
-        mapLegacy(traceIn, 'zmax', 'cmax');
-        mapLegacy(traceIn, 'zauto', 'cauto');
-    }
-
     // TODO if contours.?.usecolormap are false and hidesurface is true
     // the colorbar shouldn't be shown by default
 
@@ -155,12 +148,6 @@ function opacityscaleDefaults(traceIn, traceOut, layout, coerce) {
     }
 }
 
-function mapLegacy(traceIn, oldAttr, newAttr) {
-    if(oldAttr in traceIn && !(newAttr in traceIn)) {
-        traceIn[newAttr] = traceIn[oldAttr];
-    }
-}
-
 module.exports = {
     supplyDefaults: supplyDefaults,
     opacityscaleDefaults: opacityscaleDefaults