[flutter_tools] remove non-null check from AndroidValidator (#90090)

packages/flutter_tools/lib/src/android/android_workflow.dart

@@ -202,7 +202,6 @@ class AndroidValidator extends DoctorValidator {
       if (androidSdkLatestVersion.sdkLevel < kAndroidSdkMinVersion || androidSdkLatestVersion.buildToolsVersion < kAndroidSdkBuildToolsMinVersion) {
         messages.add(ValidationMessage.error(
           _userMessages.androidSdkBuildToolsOutdated(
-            _androidSdk!.sdkManagerPath!,
             kAndroidSdkMinVersion,
             kAndroidSdkBuildToolsMinVersion.toString(),
             _platform,
@@ -458,7 +457,7 @@ class AndroidLicenseValidator extends DoctorValidator {
       return exitCode == 0;
     } on ProcessException catch (e) {
       throwToolExit(_userMessages.androidCannotRunSdkManager(
-        _androidSdk.sdkManagerPath!,
+        _androidSdk.sdkManagerPath ?? '',
         e.toString(),
         _platform,
       ));

packages/flutter_tools/lib/src/base/user_messages.dart

@@ -117,7 +117,7 @@ class UserMessages {
       'Android sdkmanager tool was found, but failed to run ($sdkManagerPath): "$error".\n'
       'Try re-installing or updating your Android SDK,\n'
       'visit ${_androidSdkInstallUrl(platform)} for detailed instructions.';
-  String androidSdkBuildToolsOutdated(String managerPath, int sdkMinVersion, String buildToolsMinVersion, Platform platform) =>
+  String androidSdkBuildToolsOutdated(int sdkMinVersion, String buildToolsMinVersion, Platform platform) =>
       'Flutter requires Android SDK $sdkMinVersion and the Android BuildTools $buildToolsMinVersion\n'
       'To update the Android SDK visit ${_androidSdkInstallUrl(platform)} for detailed instructions.';
   String get androidMissingCmdTools => 'cmdline-tools component is missing\n'

packages/flutter_tools/test/general.shard/android/android_workflow_test.dart

@@ -386,7 +386,6 @@ Review licenses that have not been accepted (y/N)?
       ..latestVersion = sdkVersion;
 
     final String errorMessage = UserMessages().androidSdkBuildToolsOutdated(
-      sdk.sdkManagerPath,
       kAndroidSdkMinVersion,
       kAndroidSdkBuildToolsMinVersion.toString(),
       FakePlatform(),

packages/flutter_tools/test/general.shard/base/user_messages_test.dart

@@ -27,7 +27,7 @@ void main() {
     _checkInstallationURL((Platform platform) => userMessages.androidSdkInstallHelp(platform));
     _checkInstallationURL((Platform platform) => userMessages.androidMissingSdkManager('/', platform));
     _checkInstallationURL((Platform platform) => userMessages.androidCannotRunSdkManager('/', '', platform));
-    _checkInstallationURL((Platform platform) => userMessages.androidSdkBuildToolsOutdated('/', 0, '', platform));
+    _checkInstallationURL((Platform platform) => userMessages.androidSdkBuildToolsOutdated(0, '', platform));
     _checkInstallationURL((Platform platform) => userMessages.androidStudioInstallation(platform));
   });
 }