This CL updates TypeScript, rollup and d3 to newer versions.

Drive-bys:
 - Remove unused source file lang-disassembly.
 - Fix typing problem with FileReader callback

The rollup version update also ensures that watch mode works again:

  npm run-script watch

Change-Id: If852bc4287760017c185fbcb6dd9d2e36db36a04
Notry: true
Bug: v8:7327
Reviewed-on: https://chromium-review.googlesource.com/c/1396091
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58551}

Bug: v8:7327
Notry: true
Change-Id: Ia1c2164269d3d656b951d46debe42a811a6d9c89
Reviewed-on: https://chromium-review.googlesource.com/c/1386494Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58421}

Change-Id: I09cb1ea773c84891cefc54e8bc016b5b201280bd
Bug: v8:7327

NOTRY=true

Change-Id: I09cb1ea773c84891cefc54e8bc016b5b201280bd
Reviewed-on: https://chromium-review.googlesource.com/1227973Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56020}

Bug: v8:7327
Change-Id: I96fa8f6c2dbc9fb3da0be9a8b8d730cc1d1e3415
Reviewed-on: https://chromium-review.googlesource.com/1131456
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54452}

Bug: v8:7327
Change-Id: If2670e2b8e64a34f5de7855615e2288b6f2f3133
Reviewed-on: https://chromium-review.googlesource.com/1131193
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54371}