remove android-4.19-stable from kernelci testing

Todd Kjos <[email protected]> Tue, 7 Jan 2025 10:36:23 -0800
Newsgroups dev.linux.lists.kernelci
Message-ID <CAHRSSEy3cDt13XcErp5qNLKhgZDoC212MSRpDgGOXRE1=_RN2Q@mail.gmail.com>
The android-4.19-stable branch is now deprecated. Please remove it
from kernelci testing. Thanks.