Replace Guava by JDK (Partly)

[pks-1981]

Replace Guava by JDK (Partly)
#2111

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[pks-1981]

Unfortunately, I didn't get a response in topic 2111. I’m doing it as is.

[oleg-nenashev]

IMHO perfectly fine for a test. I am still catching up on PRs

[pks-1981]

@oleg-nenashev Hurray) Approved)

[oleg-nenashev]

Thanks @pks-1981 ! One less to go