Unrelease sound_classification from Noetic (#39442)

It appears to have never successfully built on any platform.
jsk-ros-pkg/jsk_recognition#2810

Signed-off-by: Shane Loretz <[email protected]>

Author: sloretz

noetic/distribution.yaml

@@ -4652,7 +4652,6 @@ repositories:
       - jsk_recognition_msgs
       - jsk_recognition_utils
       - resized_image_transport
-      - sound_classification
       tags:
         release: release/noetic/{package}/{version}
       url: https://github.com/tork-a/jsk_recognition-release.git