RFR: 7903081: Update asmtools and remove jcov traces [v2]

[Christian Stein]

> _work in progress..._
> 
> Blocked by AsmTools requiring JDK 17 (or above) to be built: https://github.com/openjdk/asmtools/blob/7ea57726a181b819c4b6331b19160c4fce238b11/build/build.properties#L30-L31

Christian Stein has updated the pull request incrementally with two additional commits since the last revision:

 - Specify JDK 17 is required to build jtreg
 - Update copyright year

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

Changes:
  - all: https://git.openjdk.org/jtreg/pull/228/files
  - new: https://git.openjdk.org/jtreg/pull/228/files/0e88a367..34944da2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jtreg&pr=228&range=01
 - incr: https://webrevs.openjdk.org/?repo=jtreg&pr=228&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jtreg/pull/228.diff
  Fetch: git fetch https://git.openjdk.org/jtreg.git pull/228/head:pull/228

PR: https://git.openjdk.org/jtreg/pull/228