According to this particular website, the answer to the OP’s question is “No” – you don’t have to submit all test scores.
https://■■■■■■■■■■■■/home/uc-test-score-submission-requirements-deadline/#comments
(Refer specifically to the comment posted by Ms. Sun on 11-13-2017 in response to the question from ‘Alex Chun.’
Now, the fact remains that the UC testing requirement website makes it sound like applicants have to submit all standardized test scores, so the question is whether “Ask Ms. Sun” is generally regarded as a reliable UC Admissions blog?