cleanup pg_graphql #1 (#7673)

## Context
This PR removes workspace-query-runner/builder in preparation for fully
deprecating pg_graphql

next steps: Remove from the setup and make a command to remove comments
on schema/tables related to pg_graphql

packages/twenty-front/src/modules/search/queries/getTextToSQL.ts

@@ -1,11 +0,0 @@
-import { gql } from '@apollo/client';
-
-export const getCopilot = gql`
-  query GetAISQLQuery($text: String!) {
-    getAISQLQuery(text: $text) {
-      sqlQuery
-      sqlQueryResult
-      queryFailedErrorMessage
-    }
-  }
-`;