Remove unused variable, update docblock

lib/Driver.js

@@ -1,4 +1,3 @@
-const array = require('locutus/php/array');
 const Helpers = require('./Helpers');
 
 /**
@@ -164,10 +163,10 @@ const Driver = {
 	 * Creates a batch update sql statement
 	 *
 	 * @private
-	 * @param {String} table
-	 * @param {Array<Object>} data
-	 * @param {String} updateKey
-	 * @return {Array<String,Object,Number>} array
+	 * @param {String} table - The name of the table to update
+	 * @param {Array<Object>} data -  Array of objects containing the update data
+	 * @param {String} updateKey - the field name to update based on
+	 * @return {Array<String,Object,Number>} - array of parameters passed to run the query
 	 */
 	updateBatch (table, data, updateKey) {
 		let affectedRows = 0;