Move two tests on Pixel 7 from staging to prod (#134784)

Related https://github.com/flutter/flutter/issues/134698

.ci.yaml

@@ -1859,7 +1859,6 @@ targets:
   - name: Linux_pixel_7pro complex_layout_scroll_perf__timeline_summary
     recipe: devicelab/devicelab_drone
     presubmit: false
-    bringup: true
     timeout: 60
     properties:
       tags: >
@@ -2365,7 +2364,6 @@ targets:
   # Pixel 7 Pro, Skia
   - name: Linux_pixel_7pro new_gallery__transition_perf
     recipe: devicelab/devicelab_drone
-    bringup: true
     presubmit: false
     timeout: 60
     properties: