Revert "Connect - Relation on FE Importer (#13213)" (#13313)

This reverts commit cc71394863.

Regression introduced in https://github.com/twentyhq/twenty/pull/13213
The import/export use an upsert logic and when it goes through the
"update" path it fails due to the connect not being implemented yet
(should be in https://github.com/twentyhq/core-team-issues/issues/1230)

---------

Co-authored-by: prastoin <paul@twenty.com>

packages/twenty-front/src/modules/spreadsheet-import/utils/uniqueEntries.ts

@@ -3,10 +3,10 @@ import uniqBy from 'lodash.uniqby';
 import { MatchColumnsStepProps } from '@/spreadsheet-import/steps/components/MatchColumnsStep/MatchColumnsStep';
 import { SpreadsheetMatchedOptions } from '@/spreadsheet-import/types/SpreadsheetMatchedOptions';
 
-export const uniqueEntries = (
+export const uniqueEntries = <T extends string>(
   data: MatchColumnsStepProps['data'],
   index: number,
-): Partial<SpreadsheetMatchedOptions>[] =>
+): Partial<SpreadsheetMatchedOptions<T>>[] =>
   uniqBy(
     data.map((row) => ({ entry: row[index] })),
     'entry',