[Clean] Remove redundant semicolons in tools/

Remove redundant semicolons after declarations in tools/.

TAG=agy
CONV=8d98c5f3-d04f-477c-a582-8cd54c715611

Bug: 550418935
Change-Id: I4abcecebfe115d2d57b2ce37cf6e59a8e6b46361
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8277351
Reviewed-by: Peter Wen <wnwen@chromium.org>
Commit-Queue: Sky Malice <skym@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1684402}
NOKEYCHECK=True
GitOrigin-RevId: 92fa04b3503e737e598dbbd6e6331c860e32098d