Auto merge of #13342 - rust-lang:revert-13328-rustc-proc-macro, r=Veykril
Auto merge of #13342 - rust-lang:revert-13328-rustc-proc-macro, r=Veykril

Revert "Add proc-macro dependency to rustc crates"

1. This panics since it indexes into the wrong thing, so fixes https://github.com/rust-lang/rust-analyzer/issues/13340
2. This didn't fix what I thought it would either
Reverts rust-lang/rust-analyzer#13328

rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer,rust-analyzer/rust-analyzer