#1568 Remove test-specific delay from prod code

[sosnovsky]

This PR removes test-specific delay from prod code.

close #1568

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Tests (delete all except exactly one):

• Does not need tests (refactor only, docs or internal changes)

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To be filled by reviewers

I have reviewed that this PR... (tick whichever items you personally focused on during this review):

• addresses the issue it closes (if any)
• code is readable and understandable
• is accompanied with tests, or tests are not needed
• is free of vulnerabilities
• is documented clearly and usefully, or doesn't need documentation

[sosnovsky]

@sosnovsky As I thought, this issue still happens. Please check and fix

Re-checking it

[sosnovsky]

@ioanmo226 I tried to run tests a couple times on semaphore - they passed well, seems like issue is fixed now.
I added timeout before app restarting, maybe on semaphore app termination took more time and lead to crashes.

[sosnovsky]

@sosnovsky This issue happened again on master.

@ioanmo226 Looks like this test failed even with previously added delay, for example here - https://flowcrypt.semaphoreci.com/workflows/64b634cc-e384-4a9d-85ae-9347c0776396?pipeline_id=45cea1b4-0b99-4b84-a184-aa73f6a8e4b3

Seems to be not related for changes in this PR, so I created another issue for it - #1631