dropped parserOptions.project array from pioneer/.eslintrc.js

it was forcing us to add a tsconfig.json file at the root which didn't make sense

pioneer/.eslintrc.js

@@ -3,12 +3,6 @@ const base = require('@polkadot/dev-react/config/eslint');
 // add override for any (a metric ton of them, initial conversion)
 module.exports = {
   ...base,
-  parserOptions: {
-    ...base.parserOptions,
-    project: [
-      './tsconfig.json'
-    ]
-  },
   rules: {
     ...base.rules,
     '@typescript-eslint/no-explicit-any': 'off',

tsconfig.json

@@ -1,3 +0,0 @@
-{
-
-}