docs(eslint-plugin): remove ignoreRHS from no-unnecessary-condition

[0xCLARITY]

This was removed from the actual code in this PR:
#1163

[typescript-eslint]

Thanks for the PR, @hbergren!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

---

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[bradzacher]

oops - thanks for catching this!

[codecov]

Codecov Report

Merging #2052 into master will decrease coverage by 0.28%.
The diff coverage is 79.60%.

@@            Coverage Diff             @@
##           master    #2052      +/-   ##
==========================================
- Coverage   93.68%   93.40%   -0.29%     
==========================================
  Files         172      171       -1     
  Lines        7871     7745     -126     
  Branches     2263     2210      -53     
==========================================
- Hits         7374     7234     -140     
- Misses        233      246      +13     
- Partials      264      265       +1     

Flag	Coverage Δ
#unittest	93.40% <79.60%> (-0.29%)	⬇️

Impacted Files	Coverage Δ
...gin-internal/src/rules/no-poorly-typed-ts-props.ts	88.88% <ø> (ø)
packages/eslint-plugin/src/rules/ban-ts-comment.ts	100.00% <ø> (ø)
packages/eslint-plugin/src/rules/comma-spacing.ts	97.77% <ø> (ø)
...int-plugin/src/rules/consistent-type-assertions.ts	86.48% <ø> (ø)
...-plugin/src/rules/explicit-function-return-type.ts	100.00% <ø> (ø)
...plugin/src/rules/explicit-module-boundary-types.ts	82.60% <ø> (ø)
...kages/eslint-plugin/src/rules/func-call-spacing.ts	96.87% <ø> (ø)
...n/src/rules/indent-new-do-not-use/OffsetStorage.ts	100.00% <ø> (ø)
.../eslint-plugin/src/rules/member-delimiter-style.ts	94.44% <ø> (ø)
...kages/eslint-plugin/src/rules/naming-convention.ts	88.51% <ø> (ø)
... and 64 more