Fix btn yahboom not working

[tadeubas]

What is this PR for?

Fix Yahboom v1.1 btn not working after this change: 093285a#diff-ce5d263efd2e8bec3590c6bd71cdcb3838a0eac2b949ed6abfa3e4f2210ddb17L252

Also:

• removed unnecessary code at boot.py
• fixed error msg appearing on simulator Camera not found: 'NoneType' object has no attribute 'release'

What is the purpose of this pull request?

• Bug fix
• New feature
• Docs update
• Other

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 94.89%. Comparing base (c201ff8) to head (9a25109).

Files with missing lines	Patch %	Lines
src/krux/input.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #484      +/-   ##
===========================================
- Coverage    94.91%   94.89%   -0.02%     
===========================================
  Files           74       74              
  Lines         7940     7941       +1     
===========================================
  Hits          7536     7536              
- Misses         404      405       +1     

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[tadeubas]

Sorry, don' t know what happened but it is working fine with the current code. Will close this PR