Steps to reproduce:

1. Create any image variation:

           site:
               image_variations:
                   my_var:
                       reference: null
                       filters:
                           - { name: geometry/scaledownonly, params: [ 220, 200 ] }
               languages: [eng-GB]
               content_view:
                   full:
                       image:
                           template: full/image.html.twig
                           match:
                               Identifier\ContentType: [image]
   

2. Add full/image.html.twig template under app/Resources/views folder with the following content:

   {{ ez_render_field( content, 'image', { parameters: { 'alias': 'my_var'}}) }}
   

3. Visit any image created in frontend which uses this variation.
4. Access Redis's CLI and use the following command: KEYS *ibx-ig*.
5. You should see 2 entries.
6. Clear variations using liip:imagine:cache:remove command.
7. Use the KEYS *ibx-ig* command again.

Result:
One can see the mentioned command removed the image variation files, but didn't remove the cache entries.

Expected result:
Cache entries should be removed.