David Iglesias 34a936b07e Revert "[web] Accepts assetBase through JS config. (#40615)" (flutter/engine#40670)
This reverts commit e0be0c5676f56ef918eb806e1173346dcbadbe5b.

This commit is causing problems with new lint rules:

```
   info - test/engine/assets_test.dart:5:1 - This annotation must be attached to a library directive. Try attaching library annotations to library directives. - library_annotations
```
2023-03-27 12:07:01 -07:00
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