correct coerce function and remove unused code

Author: archmoj

src/traces/bar/helpers.js

@@ -16,32 +16,6 @@ exports.coerceString = function(attributeDefinition, value, defaultValue) {
       attributeDefinition.dflt;
 };
 
-exports.coerceInteger = function(attributeDefinition, value, defaultValue) {
-    if(isNumeric(value)) {
-        value = +value;
-
-        value = Math.round(value);
-
-        var min = attributeDefinition.min;
-        var max = attributeDefinition.max;
-        var isOutOfBounds = (min !== undefined && value < min) ||
-              (max !== undefined && value > max);
-
-        if(!isOutOfBounds) return value;
-    }
-
-    if(
-        attributeDefinition.extras &&
-        attributeDefinition.extras.indexOf(value) !== -1
-    ) {
-        return value;
-    }
-
-    return (defaultValue !== undefined) ?
-      defaultValue :
-      attributeDefinition.dflt;
-};
-
 exports.coerceNumber = function(attributeDefinition, value, defaultValue) {
     if(isNumeric(value)) {
         value = +value;

src/traces/bar/style.js

@@ -157,7 +157,7 @@ function getFontValue(attributeDefinition, attributeValue, index, defaultValue)
           attributeDefinition.size, sizeValue, defaultValue.size),
         color: helpers.coerceColor(
           attributeDefinition.color, colorValue, defaultValue.color),
-        weight: helpers.coerceInteger(
+        weight: helpers.coerceString(
             attributeDefinition.weight, weightValue, defaultValue.weight),
         style: helpers.coerceString(
             attributeDefinition.style, styleValue, defaultValue.style),