delete unused context in body_limit.go

[mobinanoorii]

according to this issue, I remove unused context in limitedReader struct

[aldas]

please run tests after changes and commit things that pass the tests. Currently this PR removes a field but one test still uses it.

if you are using Linux, probably MacOS also - you can just run make in CLI which will execute linter and tests for your.

[mobinanoorii]

should I update the test file too?
because of we don't need context anymore

[aldas]

yes, tests need to be fixed as they fail after that change. As this PR is deleting that field - parts that require that field need to be changed in tests.

[mobinanoorii]

Ok I amend my latest commit and push again

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01⚠️

Comparison is base (a2e7085) 92.82% compared to head (adc9aee) 92.81%.

Additional details and impacted files

@@ Coverage Diff @@## master #2483 +/- ##
==========================================
- Coverage 92.82% 92.81% -0.01% 
==========================================
Files 39 39 Lines 4624 4623 -1 ==========================================
- Hits 4292 4291 -1 
Misses 241 241 Partials 91 91 

Impacted Files	Coverage Δ
middleware/body_limit.go	95.91% <100.00%> (-0.09%)	⬇️

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