fix: remove tools from workspace members

- Remove tools directory from workspace members in Cargo.toml
- This fixes cargo-release issues with missing tools/Cargo.toml

Author: vinhnx

Cargo.toml

@@ -22,7 +22,7 @@ exclude = [
 default-run = "vtcode"
 
 [workspace]
-members = ["tools"]
+members = []
 
 [workspace.lints]
 rust = {}