Remove unused variable and import

[pascalbaljet]

This PR fixes two linting errors currently present in the main branch.

> npm run lint

precognition/packages/core/tests/validator.test.js
  477:9  error  'requests' is assigned a value but never used  @typescript-eslint/no-unused-vars

precognition/packages/vue-inertia/src/types.ts
  4:10  error  'FormDataErrors' is defined but never used  @typescript-eslint/no-unused-vars

✖ 2 problems (2 errors, 0 warnings)