Remove `orderedset` from camkes-deps

orderedset can't be set up properly in python3.11, even though it is not referred to in the python tools. However, keeping it in camkes-deps

camkes-tool/tools/python-deps/setup.py

Line 32 in 7c31653

'orderedset', # For older source trees: remove in 0.7.4

breaks the pip install.

Building wheel for orderedset (setup.py): finished with status 'error'
  error: subprocess-exited-with-error
  
  × python setup.py bdist_wheel did not run successfully.
  │ exit code: 1
  ╰─> [19 lines of output]
      running bdist_wheel
      The [wheel] section is deprecated. Use [bdist_wheel] instead.
      running build
      running build_py
      creating build
      creating build/lib.linux-x86_64-cpython-311
      creating build/lib.linux-x86_64-cpython-311/orderedset
      copying lib/orderedset/__init__.py -> build/lib.linux-x86_64-cpython-311/orderedset
      running build_ext
      building 'orderedset._orderedset' extension
      creating build/temp.linux-x86_64-cpython-311
      creating build/temp.linux-x86_64-cpython-311/lib
      creating build/temp.linux-x86_64-cpython-311/lib/orderedset
      x86_64-linux-gnu-gcc -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -fPIC -I/usr/include/python3.11 -c lib/orderedset/_orderedset.c -o build/temp.linux-x86_64-cpython-311/lib/orderedset/_orderedset.o
      lib/orderedset/_orderedset.c:209:12: fatal error: longintrepr.h: No such file or directory
        209 |   #include "longintrepr.h"
            |            ^~~~~~~~~~~~~~~
      compilation terminated.
      error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
      [end of output]

I agree that orderedset should be removed from setup.py, requirements.txt and other places it's referenced and updated to ordered-set (which is already present in setup.py).