CLEANUP: Remove an unnecessary ESLint rules from `eslint-config-expensify`

[hayata-suenaga]

Because we changed the style guideline to use object de-structuring to assign default values, `rulesdir/onyx-props-must-have-default': 'error' is no longer relevant. Remove the rule.

[spcheema]

@hayata-suenaga Is this available for external?

[hayata-suenaga]

@spcheema unfortunately it's not but thank you for your interest

[hayata-suenaga]

will do after TS migration is over

[hayata-suenaga]

melvin, TS migration is still going

[hayata-suenaga]

melvin, TS migration is still going