Rollup merge of rust-lang#101407 - GuillaumeGomez:rm-duplicated-gui-test, r=Dylan-DPC

Remove duplicated test (superseeded by search-form-elements.goml)

I realized it when I worked on rust-lang#101348. The checks are more complete in `search-form-elements.goml` (for example [here](https://github.com/rust-lang/rust/blob/master/src/test/rustdoc-gui/search-form-elements.goml#L12-L29)).

r? `@Dylan-DPC`

Author: matthiaskrgr