Drop the unused tokio dependency

Nothing in the crate uses it; it only cost compile time.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

 Cargo.toml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 5aa7d94..1f0f2f2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,5 +7,4 @@ edition = "2021"
 cce-ui = { git = "https://github.com/lsgalante/cce-ui.git", rev = "fce84f5bc8b0210d605ecdb7416b3cbaa55795c8" }
 wayland-client = { version = "0.31", features = ["system"] }
 calloop = "0.13.0"
-tokio = { version = "1", features = ["full"] }