core: remove trace-of-tab references

[MrBrain295]

Summary

Remove trace-of-tab references.

Related Issues/PRs

This fixes: #14514

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[adamraine]

The issue mentions a couple references in comments if you search for "trace of tab"

[vercel]

@MrBrain295 is attempting to deploy a commit to the GoogleChrome Team on Vercel.

A member of the Team first needs to authorize it.

[adamraine]

Thanks! Could you also change "trace of tab" in these comments to "the processed trace":

lighthouse/core/computed/metrics/timing-summary.js

Line 90 in 5fc4f03

// Include all timestamps of interest from trace of tab

lighthouse/core/test/computed/metrics/timing-summary-test.js

Line 76 in 5fc4f03

// Includes timestamps from trace of tab

[adamraine]

Thanks for the PR!