clean up network sim

[trns1997]

Useless files that are not longer required

[github-actions]

File	Coverage	Lines	Branches
All files	84%	86%	82%	✅
lib/include/kickcat/Error.h	91%	100%	83%	✅
lib/include/kickcat/SBufQueue.h	80%	98%	63%	✅
lib/master/include/kickcat/Bus.h	71%	100%	42%	❌
lib/master/src/Bus.cc	90%	92%	89%	✅
lib/master/src/CoE.cc	79%	87%	72%	✅
lib/master/src/Link.cc	98%	100%	97%	✅
lib/master/src/MailboxSequencer.cc	92%	100%	85%	✅
lib/master/src/Prints.cc	95%	95%	95%	✅
lib/slave/src/AbstractESC.cc	90%	100%	81%	✅
lib/slave/src/AbstractEmulatedEEPROM.cc	0%	0%	0%	❌
lib/slave/src/ESMStates.cc	96%	98%	94%	✅
lib/slave/src/ESM.cc	95%	100%	90%	✅
lib/slave/src/PDO.cc	45%	54%	37%	❌
lib/slave/src/ESC/EmulatedESC.cc	57%	63%	51%	❌
lib/slave/src/ESC/Lan9252.cc	0%	0%	0%	❌
lib/src/Frame.cc	98%	100%	97%	✅
lib/src/Mailbox.cc	90%	94%	86%	✅
lib/src/SIIParser.cc	93%	95%	91%	✅
lib/src/protocol.cc	94%	92%	96%	✅
lib/src/CoE/EsiParser.cc	90%	93%	87%	✅
lib/src/CoE/OD.cc	98%	98%	97%	✅
lib/src/CoE/mailbox/request.cc	80%	84%	76%	✅
lib/src/CoE/mailbox/response.cc	93%	97%	88%	✅
lib/src/EoE/protocol.cc	0%	0%	0%	❌

Minimum allowed coverage is 75%

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