RFR: 8254084: Remove TemplateTable::pd_initialize

[Claes Redestad]

TemplateTable::pd_initialize is empty on all platforms, and has been so for some time. I suggest removing them.

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Commit messages:
 - Remove TemplateTable::pd_initialize

Changes: https://git.openjdk.java.net/jdk/pull/529/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=529&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8254084
  Stats: 33 lines in 6 files changed: 0 ins; 33 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/529.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/529/head:pull/529

PR: https://git.openjdk.java.net/jdk/pull/529