Remove dead compareIosVersions function (#146298)

Dead all the back in flutter#10780

Author: jmagman

packages/flutter_tools/lib/src/ios/simulators.dart

@@ -990,22 +990,6 @@ class _IOSSimulatorLogReader extends DeviceLogReader {
   }
 }
 
-int compareIosVersions(String v1, String v2) {
-  final List<int> v1Fragments = v1.split('.').map<int>(int.parse).toList();
-  final List<int> v2Fragments = v2.split('.').map<int>(int.parse).toList();
-
-  int i = 0;
-  while (i < v1Fragments.length && i < v2Fragments.length) {
-    final int v1Fragment = v1Fragments[i];
-    final int v2Fragment = v2Fragments[i];
-    if (v1Fragment != v2Fragment) {
-      return v1Fragment.compareTo(v2Fragment);
-    }
-    i += 1;
-  }
-  return v1Fragments.length.compareTo(v2Fragments.length);
-}
-
 class _IOSSimulatorDevicePortForwarder extends DevicePortForwarder {
   _IOSSimulatorDevicePortForwarder(this.device);
 

packages/flutter_tools/test/general.shard/ios/simulators_test.dart

@@ -140,28 +140,6 @@ void main() {
     });
   });
 
-  group('compareIosVersions', () {
-    testWithoutContext('compares correctly', () {
-      // This list must be sorted in ascending preference order
-      final List<String> testList = <String>[
-        '8', '8.0', '8.1', '8.2',
-        '9', '9.0', '9.1', '9.2',
-        '10', '10.0', '10.1',
-      ];
-
-      for (int i = 0; i < testList.length; i++) {
-        expect(compareIosVersions(testList[i], testList[i]), 0);
-      }
-
-      for (int i = 0; i < testList.length - 1; i++) {
-        for (int j = i + 1; j < testList.length; j++) {
-          expect(compareIosVersions(testList[i], testList[j]), lessThan(0));
-          expect(compareIosVersions(testList[j], testList[i]), greaterThan(0));
-        }
-      }
-    });
-  });
-
   group('sdkMajorVersion', () {
     late FakeSimControl simControl;