Rollup merge of #149473 - reddevilmidzy:t7, r=Kivooeo

Tidying up UI tests [7/N]

> [!NOTE]
> Intermediate commits are intended to help review, but will be squashed add comment commit prior to merge.

part of rust-lang/rust#133895

removed directory  `tests/ui/explicit`,  `tests/ui/interior-mutability`, `tests/ui/invalid-module-declaration`, tests/ui/invalid-self-argument`

r? Kivooeo

Author: matthiaskrgr