Remove unnecessary test code

[raman325]

Proposed change

Removing unnecessary files and code in the zwave_js tests. I can simplify things by mocking the node and client.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (which adds functionality)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.82%. Comparing base (e20935b) to head (10904a5).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #106   +/-   ##
=======================================
  Coverage   89.82%   89.82%           
=======================================
  Files          19       19           
  Lines        1209     1209           
=======================================
  Hits         1086     1086           
  Misses        123      123