pycharm-community: update to 2021.2.2.

[mobinmob]

Also:

• remove the arm subdir from the bundled pty4j
• remove unneeded block rm commands.

General

• This is a new package and it conforms to the quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR