Implemented Class.delete

lib/Class.js

@@ -281,6 +281,21 @@ class Class {
 		}
 	}
 
+	async delete() {
+		const sql = `
+			delete from
+				class
+			where
+				classId = ?;
+		`;
+
+		try {
+			await this.#conn.runQuery(sql, [ this.id ]);
+		} catch (e) {
+			console.error(e);
+		}
+	}
+
 	calculateAverageMovement() {
 
 	}