Remove test files from EVS implementation

- Remove tests/models/multimodal/generation/test_qwen3_vl.py
- Remove test_evs_fix.py (development test file)

These test files were part of the development process and are not
needed in the final implementation.

Co-Authored-By: deitxfge <[email protected]>
Signed-off-by: zitian.zhao <[email protected]>

Author: skyloevil