Change cpu1 and gpu1 tests to manual trigger only

Remove daily cron schedules from cpu1 and gpu1 workflow files. These tests will now only run via workflow_dispatch (manual trigger).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: riglar

.github/workflows/android-devices-matrix-cpu1.yml

@@ -1,9 +1,6 @@
 name: Test Android Devices [cpu1]
 
 on:
-  # Run at 2 AM UTC daily
-  schedule:
-    - cron: "0 2 * * *"
   # Allow manual triggering
   workflow_dispatch:
     inputs:

.github/workflows/android-devices-matrix-gpu1.yml

@@ -1,9 +1,6 @@
 name: Test Android Devices [gpu1]
 
 on:
-  # Run at 2 AM UTC daily
-  schedule:
-    - cron: "0 2 * * *"
   # Allow manual triggering
   workflow_dispatch:
     inputs: