Shift API level 34 emulator tests to prod (#153366)

These are passing consistently

.ci.yaml

@@ -411,7 +411,6 @@ targets:
 
   - name: Linux_android_emu_34 android views
     recipe: devicelab/devicelab_drone
-    bringup: true
     properties:
       tags: >
         ["framework","hostonly","linux"]
@@ -1342,7 +1341,6 @@ targets:
 
   - name: Linux_android_emu_34 flutter_driver_android_test
     recipe: flutter/flutter_drone
-    bringup: true
     timeout: 60
     properties:
       shard: flutter_driver_android
@@ -2087,7 +2085,6 @@ targets:
 
   - name: Linux_android_emu_34 android_defines_test
     recipe: devicelab/devicelab_drone
-    bringup: true
     timeout: 60
     properties:
       tags: >
@@ -2526,7 +2523,6 @@ targets:
 
   - name: Linux_android_emu_34 external_textures_integration_test
     recipe: devicelab/devicelab_drone
-    bringup: true
     timeout: 60
     # Functionally the same as "presubmit: false", except that we will run on
     # presubmit during engine rolls. This test is the *only* automated e2e