Drop unneeded requirements from tornado test-requirements

[xrmx]

Describe your environment

OS: (e.g, Ubuntu)
Python version: (e.g., Python 3.8.10)
Package version: (e.g., 0.46.0)

What happened?

Double check that the following libraries are required in tornado test-requirements:

blinker==1.7.0
Flask==3.0.2
itsdangerous==2.1.2
Jinja2==3.1.4
MarkupSafe==2.1.2
Werkzeug==3.0.6

Looks like they have been copied from a flask test-requirements file.

Steps to Reproduce

Look at tornado instrumentation test-requirements.txt

Expected Result

No flask related library present

Actual Result

Flask related libraries are there

Additional context

No response

Would you like to implement a fix?

No