Auto merge of rust-lang#105291 - nnethercote:remove-LintPassObjects, r=cjgillot

Remove `{Early,Late}LintPassObjects`.

`EarlyContextAndPass` wraps a single early lint pass. We aggregate multiple passes into that single pass by using `EarlyLintPassObjects`.

This commit removes `EarlyLintPassObjects` by changing `EarlyContextAndPass` into `EarlyContextAndPasses`. I.e. it just removes a level of indirection. This makes the code simpler and slightly faster.

The commit does likewise for late lints.

r? `@cjgillot`

Author: bors