remove underscore guideline

contributingGuides/STYLE.md

@@ -112,38 +112,9 @@ if (someCondition) {
 }
 ```
 
-## Object / Array Methods
-
-We have standardized on using [underscore.js](https://underscorejs.org/) methods for objects and collections instead of the native [Array instance methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array#instance_methods). This is mostly to maintain consistency, but there are some type safety features and conveniences that underscore methods provide us e.g. the ability to iterate over an object and the lack of a `TypeError` thrown if a variable is `undefined`.
-
-```javascript
-// Bad
-myArray.forEach(item => doSomething(item));
-// Good
-_.each(myArray, item => doSomething(item));
-
-// Bad
-const myArray = Object.keys(someObject).map(key => doSomething(someObject[key]));
-// Good
-const myArray = _.map(someObject, (value, key) => doSomething(value));
-
-// Bad
-myCollection.includes('item');
-// Good
-_.contains(myCollection, 'item');
-
-// Bad
-const modifiedArray = someArray.filter(filterFunc).map(mapFunc);
-// Good
-const modifiedArray = _.chain(someArray)
-    .filter(filterFunc)
-    .map(mapFunc)
-    .value();
-```
-
 ## Accessing Object Properties and Default Values
 
-Use `lodashGet()` to safely access object properties and `||` to short circuit null or undefined values that are not guaranteed to exist in a consistent way throughout the codebase. In the rare case that you want to consider a falsy value as usable and the `||` operator prevents this then be explicit about this in your code and check for the type using an underscore method e.g. `_.isBoolean(value)` or `_.isEqual(0)`.
+Use `lodashGet()` to safely access object properties and `||` to short circuit null or undefined values that are not guaranteed to exist in a consistent way throughout the codebase. In the rare case that you want to consider a falsy value as usable and the `||` operator prevents this then be explicit about this in your code and check for the type.
 
 ```javascript
 // Bad