#1363 Remove swiftformat from Makefile

[sosnovsky]

This PR removes brew install swiftformat from Makefile as we're using swiftformat installed through Swift Package Manager, so there is no need to install it with homebrew

close #1363

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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