Undo strange changes

packages/camera/camera_android_camerax/android/src/main/java/io/flutter/plugins/camerax/CameraInfoHostApiImpl.java

@@ -6,10 +6,8 @@
 
 import androidx.annotation.NonNull;
 import androidx.camera.core.CameraInfo;
-import androidx.camera.core.CameraState;
 import androidx.camera.core.ExposureState;
 import androidx.camera.core.ZoomState;
-import androidx.lifecycle.LiveData;
 import io.flutter.plugin.common.BinaryMessenger;
 import io.flutter.plugins.camerax.GeneratedCameraXLibrary.CameraInfoHostApi;
 import java.util.Objects;
@@ -68,40 +66,4 @@ public Long getZoomState(@NonNull Long identifier) {
 
     return instanceManager.getIdentifierForStrongReference(zoomState);
   }
-
-  /**
-   * Retrieves the {@link ExposureState} of the {@link CameraInfo} with the specified identifier.
-   */
-  @Override
-  @NonNull
-  public Long getExposureState(@NonNull Long identifier) {
-    CameraInfo cameraInfo =
-        (CameraInfo) Objects.requireNonNull(instanceManager.getInstance(identifier));
-    ExposureState exposureState = cameraInfo.getExposureState();
-
-    ExposureStateFlutterApiImpl exposureStateFlutterApiImpl =
-        new ExposureStateFlutterApiImpl(binaryMessenger, instanceManager);
-    exposureStateFlutterApiImpl.create(exposureState, result -> {});
-
-    return instanceManager.getIdentifierForStrongReference(exposureState);
-  }
-
-  /**
-   * Retrieves the current {@link ZoomState} value of the {@link CameraInfo} with the specified
-   * identifier.
-   */
-  @NonNull
-  @Override
-  public Long getZoomState(@NonNull Long identifier) {
-    CameraInfo cameraInfo =
-        (CameraInfo) Objects.requireNonNull(instanceManager.getInstance(identifier));
-    // TODO(camsim99): Create/return LiveData<ZoomState> once https://github.com/flutter/packages/pull/3419 lands.
-    ZoomState zoomState = cameraInfo.getZoomState().getValue();
-
-    ZoomStateFlutterApiImpl zoomStateFlutterApiImpl =
-        new ZoomStateFlutterApiImpl(binaryMessenger, instanceManager);
-    zoomStateFlutterApiImpl.create(zoomState, result -> {});
-
-    return instanceManager.getIdentifierForStrongReference(zoomState);
-  }
 }