RFR: 8329352: Remove dead code in splashscreen_sys.c [v3]

[Man Cao]

> Hi all,
> 
> Could anyone review this trivial change to remove dead code in splashscreen_sys.c?
> 
> -Man

Man Cao has updated the pull request incrementally with one additional commit since the last revision:

  Remove XSetIOErrorHandler() and irrelevant comment

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18556/files
  - new: https://git.openjdk.org/jdk/pull/18556/files/6b555e96..f7218541

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18556&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18556&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18556.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18556/head:pull/18556

PR: https://git.openjdk.org/jdk/pull/18556