RFR: 8331862: Remove split relocation info implementation [v3]

[Vladimir Kozlov]

> [Split relocation info](https://github.com/openjdk/jdk/blob/master/src/hotspot/share/code/relocInfo.hpp#L225) was used only for SPARC. Non of current OpenJDK platforms use it.
> 
> Tested tier1-3,stress,xcomp.

Vladimir Kozlov has updated the pull request incrementally with one additional commit since the last revision:

  address comments

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/19126/files
  - new: https://git.openjdk.org/jdk/pull/19126/files/64c9e66b..0e3ac42b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19126&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19126&range=01-02

  Stats: 3 lines in 2 files changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/19126.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19126/head:pull/19126

PR: https://git.openjdk.org/jdk/pull/19126