Drop the workspace excludes for vendor trees that no longer exist

The extraction removed vendor/cultmesh-rs and left crates/idunn-daemon as an
empty directory shell. Git does not track empty directories, so `git status`
was clean while the tree still differed from HEAD -- the shells are gone now.

Cargo.toml still excluded vendor/cultcache-rs and vendor/cultnet-rs, both
absent since Odin started consuming CultLib. An exclude for a path that does
not exist is a compensator with nothing left to compensate for.

cargo metadata resolves; odin-core still 22/22.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Cargo.toml

@@ -8,10 +8,6 @@ members = [
     "crates/odin-daemon",
 ]
 resolver = "3"
-exclude = [
-    "vendor/cultcache-rs",
-    "vendor/cultnet-rs",
-]
 
 [workspace.package]
 edition = "2024"