Remove Android 14 Desktop system image and AVDs

Since Android 15 Desktop builder is up and green, no need to keep 14.

Bug: 394947094
Change-Id: Ic4d29d7ff323f6040bd950e43f40af22f436c47f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6245814
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/main@{#1418301}
NOKEYCHECK=True
GitOrigin-RevId: 291441a974437e8c4d1fb9113b7adaee6f88cfc8

cipd/system_images/android-34/android-desktop/x86_64.yaml

diff --git a/cipd/system_images/android-34/android-desktop/x86_64.yaml b/cipd/system_images/android-34/android-desktop/x86_64.yaml
deleted file mode 100644
index c26b5bc..0000000
--- a/cipd/system_images/android-34/android-desktop/x86_64.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-# Copyright 2024 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-package: chromium/third_party/android_sdk/public/system-images/android-34/android-desktop/x86_64
-description: system_images;android-34;android-desktop;x86_64
-root: ../../../../public/
-data:
-  - dir: system-images/android-34/android-desktop/x86_64