chore(xatu): rely on Bazel for tests

Remove the Cargo integration-test entry from the Xatu scaffold. Rust tests in this repository are declared by Bazel; Cargo remains dependency metadata only.

src/xatu/Cargo.toml

@@ -10,8 +10,4 @@ path = "lib.rs"
 name = "xatu"
 path = "main.rs"
 
-[[test]]
-name = "lib_test"
-path = "lib_test.rs"
-
 [dependencies]