Remove unused UUID string validator & test

ui/src/utils/stringValidators.js

@@ -1,6 +0,0 @@
-// uses Gajus' regex matcher from https://stackoverflow.com/questions/136505/searching-for-uuids-in-text-with-regex
-export const isUUIDv4 = str =>
-  str.length === 36 &&
-  !!str.match(
-    /[a-f0-9]{8}-[a-f0-9]{4}-4[a-f0-9]{3}-[89aAbB][a-f0-9]{3}-[a-f0-9]{12}/
-  )

ui/test/utils/stringValidators.test.js

@@ -1,24 +0,0 @@
-import uuid from 'uuid'
-
-import {isUUIDv4} from 'src/utils/stringValidators'
-
-describe('isUUIDv4', () => {
-  it('returns false for non-matches', () => {
-    const inputWrongLength = 'abcd'
-    expect(isUUIDv4(inputWrongLength)).toEqual(false)
-
-    const inputWrongFormat = 'abcdefghijklmnopqrstuvwxyz1234567890'
-    expect(isUUIDv4(inputWrongFormat)).toEqual(false)
-
-    const inputWrongCharRange = 'z47ac10b-58cc-4372-a567-0e02b2c3d479'
-    expect(isUUIDv4(inputWrongCharRange)).toEqual(false)
-  })
-
-  it('returns true for matches', () => {
-    const inputRight = 'a47ac10b-58cc-4372-a567-0e02b2c3d479'
-    expect(isUUIDv4(inputRight)).toEqual(true)
-
-    const inputRightFromLibrary = uuid.v4()
-    expect(isUUIDv4(inputRightFromLibrary)).toEqual(true)
-  })
-})