Remove redundant eslint max-len overrides

[SimenB]

Summary
The max-len eslint rule was disabled in #3444. No reason to keep around the inline disables of it.

Test plan
yarn lint

[cpojer]

Thanks @SimenB. This is great.

[codecov-io]

Codecov Report

Merging #3548 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3548   +/-   ##
=======================================
  Coverage   62.28%   62.28%           
=======================================
  Files         181      181           
  Lines        6714     6714           
  Branches        6        6           
=======================================
  Hits         4182     4182           
  Misses       2529     2529           
  Partials        3        3

Impacted Files	Coverage Δ
packages/jest-config/src/utils.js	81.63% <ø> (ø)	⬆️
packages/jest-validate/src/warnings.js	100% <ø> (ø)	⬆️
packages/jest-matchers/src/toThrowMatchers.js	79.62% <ø> (ø)	⬆️
packages/jest-haste-map/src/lib/extractRequires.js	100% <ø> (ø)	⬆️
packages/jest-docblock/src/index.js	100% <ø> (ø)	⬆️
packages/pretty-format/src/index.js	98.06% <ø> (ø)	⬆️
packages/jest-cli/src/lib/getTestPathPattern.js	60% <ø> (ø)	⬆️
packages/jest-message-util/src/index.js	87.05% <ø> (ø)	⬆️
packages/jest-matchers/src/matchers.js	98.35% <ø> (ø)	⬆️
packages/jest-config/src/normalize.js	90.9% <ø> (ø)	⬆️

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[github-actions]

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