Remove sentence about closing tabs in sad tab messaging
Remove sentence about closing tabs in sad tab messaging

Closing tabs to free up memory doesn't always help and seen as a last ditch attempt to fix things. Removing in favour of users trying to reload or reading the help article.

BUG=488917

Review URL: https://codereview.chromium.org/1351203005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#350153}

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