Remove places that mentions Python 3.5 support due to EOL

[Superskyyy]

Will test Python 3.10 when officially releases next month.

Signed-off-by: Superskyyy [email protected]

[kezhenxu94]

We can say 3.5 is EOL and is not in our test matrix, it works in versions prior to 1.0, but it may or may not work with the codebase evolves.

[Superskyyy]

We can say 3.5 is EOL and is not in our test matrix, it works in versions prior to 1.0, but it may or may not work with the codebase evolves.

Ok, I intend to swap existing string formatting(% .format + etc.) to f-strings since they are much faster, but that does blocks all Python 3.5 users from v1.0.0, should I do that?

[kezhenxu94]

We can say 3.5 is EOL and is not in our test matrix, it works in versions prior to 1.0, but it may or may not work with the codebase evolves.

Ok, I intend to swap existing string formatting(% .format + etc.) to f-strings since they are much faster, but that does blocks all Python 3.5 users from v1.0.0, should I do that?

That's awesome. We can do that, and just say since 1.0 we don't support 3.5.

[wu-sheng]

As you said we will drop 3.5 supports, https://twitter.com/ASFSkyWalking/status/1439553219210792963.

[kezhenxu94]

OK, since the requirement here is version-ed, users should check the corresponding doc of their versions, this PR is good to me now

[kezhenxu94]

Will test Python 3.10 when officially releases next month.

Seems 3.10 is out. @Superskyyy