radicale2: drop package as we do have radicale3

radicale2: drop package as we do have radicale3

This package is not compiled due to this build log failure:
```
adding 'radicale-2.1.12.dist-info/RECORD'
removing build/bdist.linux-aarch64/wheel
Successfully built radicale-2.1.12-py3-none-any.whl
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/builder/shared-workdir/build/sdk/staging_dir/hostpkg/lib/python3.13/site-packages/installer/__main__.py", line 98, in <module>
    _main(sys.argv[1:], "python -m installer")
    ~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/builder/shared-workdir/build/sdk/staging_dir/hostpkg/lib/python3.13/site-packages/installer/__main__.py", line 86, in _main
    with WheelFile.open(args.wheel) as source:
         ~~~~~~~~~~~~~~^^^^^^^^^^^^
  File "/builder/shared-workdir/build/sdk/staging_dir/target-aarch64_cortex-a53_musl/usr/lib/python3.13/contextlib.py", line 141, in __enter__
    return next(self.gen)
  File "/builder/shared-workdir/build/sdk/staging_dir/hostpkg/lib/python3.13/site-packages/installer/sources.py", line 162, in open
    with zipfile.ZipFile(path) as f:
         ~~~~~~~~~~~~~~~^^^^^^
  File "/builder/shared-workdir/build/sdk/staging_dir/target-aarch64_cortex-a53_musl/usr/lib/python3.13/zipfile/__init__.py", line 1367, in __init__
    self.fp = io.open(file, filemode)
              ~~~~~~~^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/builder/shared-workdir/build/sdk/build_dir/target-aarch64_cortex-a53_musl/pypi/Radicale-2.1.12//openwrt-build/Radicale-2.1.12-*.whl'
```

This occurred due to PEP 625, which requires wheel filenames in lowercase.
The local build produces lowercase-compliant names (radicale-2.1.12-*.whl),
but the script searches for uppercase (Radicale-2.1.12-*.whl).

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>