chore: remove exemption for deleted safety router (#5819)

# What does this PR do?
<!-- Provide a short summary of what this PR does and why. Link to
relevant issues if applicable. -->
Following up to remove an exception no longer needed after #5291 was
merged.

<!-- If resolving an issue, uncomment and update the line below -->
<!-- Closes #[issue-number] -->
Part of RHAISTRAT-1362
## Test Plan
<!-- Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.* -->

<!-- For API changes, include:
1. A testing script (Python, curl, etc.) that exercises the new/modified
endpoints
2. The output from running your script

Example:
```python
...
...
```

Output:
```
<paste actual output here>
```
-->

Signed-off-by: Doug Edgar <dedgar@redhat.com>

Author: rhdedgar

pyproject.toml

@@ -384,7 +384,6 @@ convention = "google"
 "src/ogx/core/utils/exec.py" = ["S603"] # Command execution utility
 "src/ogx/core/storage/**/*.py" = ["S608"] # Table name interpolation covered by custom SQL injection hook
 "src/ogx/providers/**/vector_io/**/*.py" = ["S608"] # Table name interpolation covered by custom SQL injection hook
-"src/ogx/core/routers/safety.py" = ["S608"] # Error message formatting, not SQL
 "src/ogx/core/library_client.py" = ["S112"] # Intentional try-except-continue for type coercion
 "src/ogx/core/routers/tool_runtime.py" = ["S110"] # Intentional try-except-pass for optional metric context
 "src/ogx/core/routing_tables/models.py" = ["S112"] # Intentional try-except-continue for credential probing