You may freely omit the Appendix.
From the Apache License 2.0:
- Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof [...] provided that You meet the following conditions:
a) You must give any other recipients of the Work or Derivative Works a copy of this License; and...
And from section 1:
"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
Since the Appendix is outside the stated scope of "Sections 1 through 9", the requirement in 4(a) that "You must give any other recipients... a copy of this License" does not include the Appendix.