Remove repeated lines on nav_graph.xml

Removing what seems to be a typo. The following lines are repeated in nav_graph.xml

            app:enterAnim="@anim/slide_in_right"
            app:exitAnim="@anim/slide_out_left"
            app:popEnterAnim="@anim/slide_in_left"
            app:popExitAnim="@anim/slide_out_right" />