RFR: 8268272: Remove JDK-8264874 changes because Graal was removed.

[Vladimir Kozlov]

JDK-8264806 removed Graal sources from JDK and INCLUDE_GRAAL is not defined anymore. We can now remove code added by JDK-8264874: 
https://github.com/openjdk/jdk/commit/951f277a

Tested Tier1.

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Commit messages:
 - 8268272: Remove JDK-8264874 changes because Graal was removed.

Changes: https://git.openjdk.java.net/jdk/pull/4367/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4367&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268272
  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4367.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4367/head:pull/4367

PR: https://git.openjdk.java.net/jdk/pull/4367