Many unnecessary allocations in path resolution

[Noratrieb]

rust-analyzer/crates/hir-def/src/nameres/path_resolution.rs

Lines 187 to 193 in bc97821

	let _cx = stdx::panic_context::enter(format!(
	"DefMap {:?} crate_name={:?} block={:?} path={}",
	self.krate,
	graph[self.krate].display_name,
	self.block,
	path.display(db.upcast())
	));

This does a bunch of string formatting on the happy path. According to my dhat analysis (opening rust-lang/rust with RA running in dhat and then waiting for a few minutes (it is very slow)), this accounts for 13% of the allocated blocks inside rust-analyzer. I don't think it uses much memory, but it's probably quite slow. I don't think my analysis is necessarily representative of normal usage, as it only really captured startup, but it still seems pretty relevant.

rust-analyzer version: current master bc97821

rustc version: 1.76.0-nightly, doesn't matter

relevant settings: the recommended settings for rust-lang/rust, provided there in src/etc/rust_analyzer_settings.json

[Veykril]

We can just remove those, they were added to aid in debugging #10084 which we now consider an undeterministic bug of salsa, so they don't really help anymore