Remove IMU contents from VO demo file

yaml/demo_visual_odometry_euroc.yaml

@@ -41,13 +41,6 @@ config:
         # pose: [-0.0216,-0.0647,0.0098,  -0.0077072, 0.0104967, 0.7017528, 0.7123015] # according to mav0/cam0/sensor.yaml in dataset
       using_raw: false
       follow: "camera_euroc_mav0.yaml"
-    -
-      type: "SensorImu"
-      name: "IMU"
-      plugin: "imu"
-      extrinsic:
-        pose:  [0,0,0, 0,0,0,1]
-      follow: "vi_sensor_imu.yaml"
 
   processors:
     -
@@ -63,16 +56,6 @@ config:
       type: "SubscriberCamera"
       topic: "/cam0/image_rect"
       sensor_name: "CAMERA"
-    -
-      package: "wolf_ros_imu"
-      type: "SubscriberImu"
-      topic: "/imu/imu_raw"
-      sensor_name: "IMU"
-      imu_x_axis: 3
-      imu_y_axis: -2
-      imu_z_axis: 1
-      cov_source: "sensor"
-      in_degrees: false
 
   ROS publisher:
     -