[jdk17u-dev] RFR: 8325585: Remove no longer necessary calls to set/unset-in-asgct flag in JDK 17

[Johannes Bechberger]

Remove two duplicate calls introduced by the backport of [JDK-8304725](https://bugs.openjdk.org/browse/JDK-8304725).
Tested locally.

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Commit messages:
 - 8325585: Remove no longer necessary calls to set/unset-in-asgct flag in JDK 17

Changes: https://git.openjdk.org/jdk17u-dev/pull/2207/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2207&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325585
  Stats: 4 lines in 1 file changed: 0 ins; 4 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2207.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2207/head:pull/2207

PR: https://git.openjdk.org/jdk17u-dev/pull/2207