diff --git a/lib/util.js b/lib/util.js
index ab23f6af..e448e20b 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -30,25 +30,6 @@ exports.recursiveDOMDelete = function (DOMobject) {
   }
 };
 
-/**
- * this function gives you a range between 0 and 1 based on the min and max values in the set, the total sum of all values and the current value.
- *
- * @param {number} min
- * @param {number} max
- * @param {number} total
- * @param {number} value
- * @returns {number}
- */
-exports.giveRange = function (min, max, total, value) {
-  if (max == min) {
-    return 0.5;
-  }
-  else {
-    var scale = 1 / (max - min);
-    return Math.max(0, (value - min) * scale);
-  }
-};
-
 /**
  * Test whether given object is a string
  * @param {*} object
@@ -82,29 +63,13 @@ exports.isDate = function (object) {
 };
 
 /**
- * Create a semi UUID
- * source: http://stackoverflow.com/a/105074/1262753
+ * Create a UUID
  * @return {string} uuid
  */
 exports.randomUUID = function () {
   return uuid.v4();
 };
 
-/**
- * assign all keys of an object that are not nested objects to a certain value (used for color objects).
- * @param {object} obj
- * @param {number} value
- */
-exports.assignAllKeys = function (obj, value) {
-  for (var prop in obj) {
-    if (obj.hasOwnProperty(prop)) {
-      if (typeof obj[prop] !== 'object') {
-        obj[prop] = value;
-      }
-    }
-  }
-};
-
 
 /**
  * Copy property from b to a if property present in a.