[reland] delete FlutterCommand.usageValues (#162550)

Relands https://github.com/flutter/flutter/pull/162468

The original PR broke g3 postsubmit, because there was an override of
`FlutterCommand.usageValues`. This was since deleted.

## Original PR description
toward https://github.com/flutter/flutter/issues/150575. More simple
deletes.

<details>

<summary> Pre-launch checklist </summary> 


- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

</details>

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

dev/devicelab/bin/tasks/module_test_ios.dart

@@ -627,7 +627,6 @@ end
         swiftHostApp,
       );
 
-      final File swiftAnalyticsOutputFile = File(path.join(tempDir.path, 'analytics-swift.log'));
       final Directory swiftBuildDirectory = Directory(path.join(tempDir.path, 'build-swift'));
 
       await inDirectory(swiftHostApp, () async {
@@ -652,9 +651,7 @@ end
             'BUILD_DIR=${swiftBuildDirectory.path}',
             'COMPILER_INDEX_STORE_ENABLE=NO',
           ],
-          environment: <String, String>{
-            'FLUTTER_ANALYTICS_LOG_FILE': swiftAnalyticsOutputFile.path,
-          },
+          environment: <String, String>{'FLUTTER_SUPPRESS_ANALYTICS': 'true'},
         );
       });
 
@@ -665,16 +662,6 @@ end
         return TaskResult.failure('Failed to build existing Swift app .app');
       }
 
-      final String swiftAnalyticsOutput = swiftAnalyticsOutputFile.readAsStringSync();
-      if (!swiftAnalyticsOutput.contains('cd24: ios') ||
-          !swiftAnalyticsOutput.contains('cd25: true') ||
-          !swiftAnalyticsOutput.contains('viewName: assemble')) {
-        return TaskResult.failure(
-          'Building outer Swift app produced the following analytics: "$swiftAnalyticsOutput" '
-          'but not the expected strings: "cd24: ios", "cd25: true", "viewName: assemble"',
-        );
-      }
-
       return TaskResult.success(null);
     } catch (e) {
       return TaskResult.failure(e.toString());