Removal install package with extra from tests (openvinotoolkit#2717)

### Changes

Removal install package with extra from tests

### Reason

```
WARNING: nncf 2.11.0.dev0+unknown.version does not provide the extra 'torch'
```

tests/cross_fw/install/test_install.py

@@ -50,7 +50,7 @@ def find_file_by_extension(directory: Path, extension: str) -> str:
         elif package_type == "build_w":
             package_path = find_file_by_extension(PROJECT_ROOT / "dist", ".whl")
 
-        run_cmd_line = f"{pip_with_venv} install {package_path}[{backend}]"
+        run_cmd_line = f"{pip_with_venv} install {package_path}"
         subprocess.run(run_cmd_line, check=True, shell=True)
 
     run_path = tmp_path / "run"