Revert "no-typeof-undefined: Add historical note to docs (#1992)"

This reverts commit 84a5816.
sindresorhus · Jan 9, 2023 · 38b1be1 · 38b1be1
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commit 38b1be1
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diff --git a/docs/rules/no-typeof-undefined.md b/docs/rules/no-typeof-undefined.md
@@ -9,8 +9,6 @@
 
 Checking if a value is `undefined` by using `typeof value === 'undefined'` is needlessly verbose. It's generally better to compare against `undefined` directly. The only time `typeof` is needed is when a global variable potentially does not exists, in which case, using `globalThis.value === undefined` may be better.
 
-Historical note: Comparing against `undefined` without `typeof` was frowned upon until ES5. This is no longer a problem since all engines currently in use no longer allow reassigning the `undefined` global.
-
 ## Fail
 
 ```js