Add some util methods to ArrayUtil

• Type: Story
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 6.2.0 CE RC2
• Fix Version/s: 6.2.0 CE RC1
• Component/s: Legacy Components, Legacy Components > API
• Labels: None
• Epic/Theme:
  • Quick_Win
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/14016

Add two util methods to the API:

deleteAll(array1, array2) --> delete from array 1 all the indexes of array 2

continsAy(array1, array2) --> returns true if array 1 has any of the indexes of array 2

This could not be tested by QA