RFR: 8356656: Drop unused DEVKIT_HOME from jib-profiles.js [v2]

[Mikael Vidstedt]

> The DEVKIT_HOME environment variable gets set up in jib-profiles.js but the last use of it was removed in [JDK-8264805](https://bugs.openjdk.org/browse/JDK-8264805).
> 
> Testing: tier1,builds-tier[2-5]

Mikael Vidstedt has updated the pull request incrementally with one additional commit since the last revision:

  Remove accidentally added server.log files

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25159/files
  - new: https://git.openjdk.org/jdk/pull/25159/files/63ffcfc5..df72d5be

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25159&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25159&range=00-01

  Stats: 14 lines in 2 files changed: 0 ins; 14 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25159.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25159/head:pull/25159

PR: https://git.openjdk.org/jdk/pull/25159