fixup - no need to override opacity editType twice

Author: etpinard

src/traces/scattergl/attributes.js

@@ -83,9 +83,7 @@ var attrs = module.exports = overrideAll({
         marker: scatterAttrs.unselected.marker
     },
 
-    opacity: extendFlat({}, plotAttrs.opacity, {
-        editType: 'calc'
-    }),
+    opacity: extendFlat({}, plotAttrs.opacity)
 
 }, 'calc', 'nested');