python3-xkbcommon: remove package

This package is no longer required by anything.

Author: ahesford

srcpkgs/python3-xkbcommon/template

@@ -881,6 +881,7 @@ replaces="
  python3-tables<=3.7.0_4
  python3-txacme<=0.9.3_3
  python3-typed-ast<=1.5.4_3
+ python3-xkbcommon<=0.8_4
  qcoro-qt5<=0.10.0_1
  qemu-system-cris<=9.1.2_1
  qemu-user-cris<=9.1.2_1