To hide or filter out respondents that skipped a particular question, create a Filter by Question and Answer with every answer choice to that question included as the filter criteria. This will ensure that only respondents that answered the question will be included in the filtered view.
Any respondent that did not select an answer choice for the question will be excluded from that view.
When a filter is applied, only the responses that meet the defined filter criteria will show in the response summary on the right side of the page.
Learn more: Filtering by Question and Answer