Update index.md

removed  * Objective 1.1.1: … use computing tools and techniques to create artifacts.
 * Objective 1.2.1: … use computing tools and techniques for creative expression.
 * Objective 1.3.1: … use programming as a creative tool.
 * Objective 4.2.1: … express an algorithm in a language.
 * Objective 5.3.1: … evaluate a program for correctness.
 * Objective 5.3.2: … develop a correct program.
 * Objective 5.4.1: … employ appropriate mathematical and logical concepts in programming.
 * Objective 7.1.1: … analyze how computing affects communication, interaction, and cognition.
 * Objective 7.3.1: … analyze the beneficial and harmful effects of computing.
 * Objective 7.4.1: … connect computing within economic, social, and cultural contexts.