1.21.120 Dolphin files are duplicated

In Preview 1.21.120.24, dolphin move particles were changed to be data driven rather than hardcoded. This required a retroactive change to the original entity, model, animation controller and particle files. However, the changes were also included in the 1.21.120 folder despite being identical to the previous versions (that replaced the old files).

Steps to Reproduce:

1. Navigate to C:\XboxGames\Minecraft Preview for Windows\Content\data\resource_packs

2. Compare the dolphin entity files located in vanilla_1.21.70\entity and vanilla_1.21.120\entity

3. Compare the dolphin models located in vanilla_1.21.90\models\entity and vanilla_1.21.120\models\entity

4. Compare the dolphin animation controller files located in vanilla\animation_controllers and vanilla_1.21.120\animation_controllers

5. Compare the dolphin move particles located in vanilla\particles and vanilla_1.21.120\particles

Observed Results:
The files are identical to the ones they’re overriding.

Expected Results:
vanilla_1.21.120 does not include the dolphin files at all.

Notes: The retroactive change is necessary and should not be reverted.