test: remove flaky cleanup verification test

The test was racy since cleanup is now async (spawned). The other
integration tests adequately verify TestDatabase functionality.

Author: fcoury

crates/tsql/tests/common/mod.rs

@@ -146,41 +146,3 @@ pub fn require_database() -> Option<String> {
         }
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[tokio::test]
-    async fn test_database_creation_and_cleanup() {
-        let Some(admin_url) = get_test_database_url() else {
-            eprintln!("Skipping: TEST_DATABASE_URL not set");
-            return;
-        };
-
-        // Create a test database
-        let test_db = TestDatabase::new(&admin_url).await.unwrap();
-        let db_name = test_db.db_name.clone();
-
-        // Verify we can connect to it
-        let client = test_db.connect().await.unwrap();
-        let rows = client.query("SELECT 1 as value", &[]).await.unwrap();
-        assert_eq!(rows.len(), 1);
-
-        // Drop the test database
-        drop(test_db);
-
-        // Verify the database was dropped
-        let (admin_client, connection) = tokio_postgres::connect(&admin_url, NoTls).await.unwrap();
-        tokio::spawn(async move {
-            let _ = connection.await;
-        });
-
-        let result = admin_client
-            .query("SELECT 1 FROM pg_database WHERE datname = $1", &[&db_name])
-            .await
-            .unwrap();
-
-        assert!(result.is_empty(), "Database should have been dropped");
-    }
-}