refactor: Remove redundant local vars in examples

[alexandear]

The PR proposes removing local variables such as bytePassword and secretBytes because they do not significantly enhance readability.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.

Project coverage is 93.05%. Comparing base (2b8c7fa) to head (cbdcbef).
Report is 131 commits behind head on master.

Files with missing lines	Patch %	Lines
example/basicauth/main.go	0.00%	2 Missing ⚠️
example/tagprotection/main.go	0.00%	2 Missing ⚠️
example/tokenauth/main.go	0.00%	2 Missing ⚠️
...xample/codespaces/newreposecretwithxcrypto/main.go	0.00%	1 Missing ⚠️
...xample/codespaces/newusersecretwithxcrypto/main.go	0.00%	1 Missing ⚠️
example/newreposecretwithxcrypto/main.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@ Coverage Diff @@## master #3303 +/- ##
==========================================
- Coverage 97.72% 93.05% -4.67% 
==========================================
Files 153 172 +19 Lines 13390 11771 -1619 ==========================================
- Hits 13085 10954 -2131 - Misses 215 723 +508 - Partials 90 94 +4 

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[gmlewis]

Thank you, @alexandear !
LGTM.
Merging.