When clearing typed linting options, also delete parserOptions.EXPERIMENTAL_useProjectService

[JoshuaKGoldberg]

Following typescript-eslint/typescript-eslint#8424 (comment): right now, eslint-plugin-import deletes the two known parserOptions from typescript-eslint's typed linting:

eslint-plugin-import/utils/parse.js

Lines 80 to 85 in 7a21f7e

	// @typescript-eslint/parser will parse the entire project with typechecking if you provide
	// "project" or "projects" in parserOptions. Removing these options means the parser will
	// only parse one file in isolate mode, which is much, much faster.
	// https://github.com/import-js/eslint-plugin-import/issues/1408#issuecomment-509298962
	delete parserOptions.project;
	delete parserOptions.projects;

...but we added an EXPERIMENTAL_useProjectService too. Folks using it are experiencing the performance issues from #1408 again.