RFR: 8332676: Remove unused BarrierSetAssembler::incr_allocated_bytes

[Albert Mingkun Yang]

Trivial removing dead code.

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Commit messages:
 - basm-trivial

Changes: https://git.openjdk.org/jdk/pull/19345/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19345&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332676
  Stats: 126 lines in 10 files changed: 0 ins; 126 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19345.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19345/head:pull/19345

PR: https://git.openjdk.org/jdk/pull/19345