fix: remove invalid images key from hacs.json

Author: aspenrt78

hacs.json

@@ -3,6 +3,5 @@
   "render_readme": true,
   "homeassistant": "2024.1.0",
   "content_in_root": false,
-  "filename": "button_builder",
-  "images": ["bbthumb.png"]
+  "filename": "button_builder"
 }