eslint.config: remove redundant @typescript-eslint plugin

That plugin is already included in the `typescript-eslint` package,
so it is redundant to include it again in the ESLint configuration.

This change is required to avoid a warning when running ESLint:

    ConfigError: Config (unnamed): Key "plugins": Cannot redefine plugin
    "@typescript-eslint".

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

eslint.config.mjs

@@ -15,7 +15,6 @@ export default tseslint.config([
     {
         ignores: ["**/dist/", "**/lib/", "**/node_modules/", "**/jest.config.js"],
         plugins: {
-            "@typescript-eslint": typescriptEslint,
             "@stylistic": stylistic,
             "anti-trojan-source": antiTrojanSource,
             jest,