[crac] RFR: 8354514: [CRaC] Remove new methods from AbstractInterruptibleChannel and SocketImpl [v2]

[Radim Vansa]

> Fix errors in JCK due to newly exposed methods.

Radim Vansa has updated the pull request incrementally with one additional commit since the last revision:

  Add license header

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Changes:
  - all: https://git.openjdk.org/crac/pull/222/files
  - new: https://git.openjdk.org/crac/pull/222/files/cbe08b5e..a15a667b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=crac&pr=222&range=01
 - incr: https://webrevs.openjdk.org/?repo=crac&pr=222&range=00-01

  Stats: 24 lines in 1 file changed: 24 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/crac/pull/222.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/222/head:pull/222

PR: https://git.openjdk.org/crac/pull/222