Remove superfluous test

Author: workingjubilee

tests/cli-self-upd.rs

@@ -302,10 +302,6 @@ fn uninstall_doesnt_leave_gc_file() {
     })
 }
 
-#[test]
-#[ignore]
-fn uninstall_stress_test() {}
-
 #[test]
 fn update_exact() {
     let version = env!("CARGO_PKG_VERSION");