rm _has??? attributes

Author: etpinard

src/plots/layout_attributes.js

@@ -168,30 +168,7 @@ module.exports = {
         role: 'info',
         description: 'Determines whether or not a legend is drawn.'
     },
-    _hasCartesian: {
-        valType: 'boolean',
-        dflt: false
-    },
-    _hasGL3D: {
-        valType: 'boolean',
-        dflt: false
-    },
-    _hasGeo: {
-        valType: 'boolean',
-        dflt: false
-    },
-    _hasPie: {
-        valType: 'boolean',
-        dflt: false
-    },
-    _hasGL2D: {
-        valType: 'boolean',
-        dflt: false
-    },
-    _hasTernary: {
-        valType: 'boolean',
-        dflt: false
-    },
+
     _composedModules: {
         '*': 'Fx'
     },

src/plots/plots.js

@@ -738,12 +738,6 @@ plots.supplyLayoutGlobalDefaults = function(layoutIn, layoutOut) {
     coerce('separators');
     coerce('hidesources');
     coerce('smith');
-    coerce('_hasCartesian');
-    coerce('_hasGL3D');
-    coerce('_hasGeo');
-    coerce('_hasPie');
-    coerce('_hasGL2D');
-    coerce('_hasTernary');
 };
 
 plots.supplyLayoutModuleDefaults = function(layoutIn, layoutOut, fullData) {