Revert "Upload generated frame-request-pending stats" (#135672)

Reverts flutter/flutter#135645

dev/devicelab/lib/tasks/perf_tests.dart

@@ -1358,9 +1358,6 @@ const List<String> _kCommonScoreKeys = <String>[
   '99th_percentile_picture_cache_memory',
   'worst_picture_cache_memory',
   'old_gen_gc_count',
-  'average_frame_request_pending_latency',
-  '90th_percentile_frame_request_pending_latency',
-  '99th_percentile_frame_request_pending_latency'
 ];
 
 /// Measures how long it takes to compile a Flutter app to JavaScript and how

dev/devicelab/test/perf_tests_test.dart

@@ -58,9 +58,6 @@ void main() {
       'average_vsync_transitions_missed': 1,
       '90th_percentile_vsync_transitions_missed': 1,
       '99th_percentile_vsync_transitions_missed': 1,
-      'average_frame_request_pending_latency': 0.1,
-      '90th_percentile_frame_request_pending_latency': 0.1,
-      '99th_percentile_frame_request_pending_latency': 0.1,
     };
     const String resultFileName = 'fake_result';
     void driveCallback(List<String> arguments) {
@@ -111,9 +108,6 @@ void main() {
       '90hz_frame_percentage': 0.4,
       '120hz_frame_percentage': 0.6,
       'illegal_refresh_rate_frame_count': 10,
-      'average_frame_request_pending_latency': 0.1,
-      '90th_percentile_frame_request_pending_latency': 0.1,
-      '99th_percentile_frame_request_pending_latency': 0.1,
     };
     const String resultFileName = 'fake_result';
     void driveCallback(List<String> arguments) {