Fix bug in Intan interface where extra device is written

[h-mayorquin]

Because the metadata in metadata["Ecephys"]["ElectrodeGroups"] contains a contains a reference to a device here:

neuroconv/src/neuroconv/datainterfaces/ecephys/baserecordingextractorinterface.py

Lines 92 to 95 in 675ec48

	electrode_metadata = [
	dict(name=str(group_id), description="no description", location="unknown", device="DeviceEcephys")
	for group_id in unique_channel_groups
	]

When the code hits these lines another device is created:

neuroconv/src/neuroconv/tools/spikeinterface/spikeinterface.py

Lines 175 to 184 in 675ec48

	for group_metadata in metadata["Ecephys"]["ElectrodeGroup"]:
	if group_metadata.get("name", defaults[0]["name"]) not in nwbfile.electrode_groups:
	device_name = group_metadata.get("device", defaults[0]["device"])
	if device_name not in nwbfile.devices:
	new_device_metadata = dict(Ecephys=dict(Device=[dict(name=device_name)]))
	add_devices(nwbfile=nwbfile, metadata=new_device_metadata)
	warnings.warn(
	f"Device '{device_name}' not detected in "
	"attempted link to electrode group! Automatically generating."
	)

This resulted in me getting an nwbfile with two devices Intan and the generic one that the default metadata included.

This PR fixes this, I added a test and took the opportunity to move the Intan tests to the new format.

Plus, I made a small improvement to the metadata where the specific controller that was used is indicated as a Device Description:

https://intantech.com/RHD_system.html
https://intantech.com/RHS_system.html

Finally, I also removed a bunch of deprecations whose time has come and logic that was only valid when python-neo version requirement was lower.

[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.

Project coverage is 90.31%. Comparing base (81a022d) to head (0d6c51d).
Report is 60 commits behind head on main.

Files with missing lines	Patch %	Lines
...c/neuroconv/tools/spikeinterface/spikeinterface.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1059      +/-   ##
==========================================
- Coverage   90.32%   90.31%   -0.01%     
==========================================
  Files         129      129              
  Lines        7996     7988       -8     
==========================================
- Hits         7222     7214       -8     
  Misses        774      774              

Flag	Coverage Δ
unittests	90.31% <88.88%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...datainterfaces/ecephys/intan/intandatainterface.py	100.00% <100.00%> (+9.30%)	⬆️
...c/neuroconv/tools/spikeinterface/spikeinterface.py	90.77% <0.00%> (-0.93%)	⬇️

... and 1 file with indirect coverage changes