refactor(common,core,microservices): drop all deprecated methods

[micalevisk]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

there are few functions marked with @deprecated

What is the new behavior?

all the deprecated functions no longer exists

Does this PR introduce a breaking change?

• Yes
• No

[coveralls]

Pull Request Test Coverage Report for Build 4b09d771-4607-4211-be00-7557b3ca3b1a

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.001%) to 94.015%

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Totals
Change from base Build f8f1559e-54b7-42d7-acf5-330f0a0be505:	-0.001%
Covered Lines:	5812
Relevant Lines:	6182

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💛 - Coveralls

[kamilmysliwiec]

LGTM!