fix: ValidateURL failing tests (#1394)

* test: remove ValidateUrl.test.js

The code was removed with ecac786d but the test was left here (and has been failing since then, obviously 🤣)

* test: remove conflicting test case

There is another test case that explicitly expects the `null` result when the input array only contains one element.

* Updated Documentation in README.md

---------

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Maths/test/ParityOutlier.test.js

@@ -9,11 +9,6 @@ describe('Testing parityOutlier function', () => {
     expect(parityOutlier([177, 5, 76, 1919])).toBe(76)
   })
 
-  it('should, if the given array has only one integer element, return the integer itself', () => {
-    expect(parityOutlier([83])).toBe(83)
-    expect(parityOutlier([54])).toBe(54)
-  })
-
   it('should, if the given array has only an odd and an even number, return the odd outlier', () => {
     expect(parityOutlier([1, 2])).toBe(1)
     expect(parityOutlier([4, 3])).toBe(3)

String/test/ValidateUrl.test.js

@@ -1,14 +0,0 @@
-import { validateURL } from '../ValidateUrl'
-
-describe('ValidateUrl', () => {
-  it('expects to return false', () => {
-    expect(validateURL('google')).toEqual(false)
-    expect(validateURL('link: https://www.google.com')).toEqual(false)
-  })
-
-  it('expects to return true', () => {
-    expect(validateURL('http://www.google.com')).toEqual(true)
-    expect(validateURL('https://www.google.com')).toEqual(true)
-    expect(validateURL('www.google.com')).toEqual(true)
-  })
-})