RFR: 8070: Move to JDK 17 leftovers [v2]

[Brice Dutheil]

> In #482 I forgot to update the Docker build, as well as remove some old profiles in the parent pom. This PR, fixes that. Also I noticed a few quirks around ECJ compiler that I think should be removed as they are not working when using a regular OpenJDK compiler.

Brice Dutheil has updated the pull request incrementally with one additional commit since the last revision:

  chore: pr review fixes

-------------

Changes:
  - all: https://git.openjdk.org/jmc/pull/483/files
  - new: https://git.openjdk.org/jmc/pull/483/files/e750fe2a..871bfb0f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jmc&pr=483&range=01
 - incr: https://webrevs.openjdk.org/?repo=jmc&pr=483&range=00-01

  Stats: 4 lines in 2 files changed: 0 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jmc/pull/483.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/483/head:pull/483

PR: https://git.openjdk.org/jmc/pull/483