AWS HTTP API: Drop support for timeout setting

[medikoo]

BREAKING CHANGE:
timeout setting as configured directly for httpApi event, is no longer supported. Timeout value is now unconditionally resolved from function timeout setting. It's to guarantee that configured endpoint has necessary room to process function invocation

Closes: #8087

[codecov-commenter]

Codecov Report

Merging #8184 into v2 will decrease coverage by 0.00%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##               v2    #8184      +/-   ##
==========================================
- Coverage   88.20%   88.19%   -0.01%     
==========================================
  Files         247      247              
  Lines        9443     9432      -11     
==========================================
- Hits         8329     8319      -10     
+ Misses       1114     1113       -1     

Impacted Files	Coverage Δ
lib/plugins/aws/provider/awsProvider.js	93.11% <ø> (ø)
...lugins/aws/package/compile/events/httpApi/index.js	92.59% <66.66%> (+0.10%)	⬆️

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