[cleanup] assertions without destructuring

Bug: none
Change-Id: I69770ce4064fd981d891509735c8cf102bb57e6d
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6276101
Auto-Submit: Alex Rudenko <[email protected]>
Commit-Queue: Alex Rudenko <[email protected]>
Commit-Queue: Nikolay Vitkov <[email protected]>
Reviewed-by: Nikolay Vitkov <[email protected]>

Author: OrKoN