RFR: 8368357: Some HotSpot source files have initial blank lines

[Francesco Andreuzzi]

Removing some spurious blank lines at the beginning of the file. Looks trivial to me.

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Commit messages:
 - more
 - rm

Changes: https://git.openjdk.org/jdk/pull/27489/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27489&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8368357
  Stats: 8 lines in 8 files changed: 0 ins; 8 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27489.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27489/head:pull/27489

PR: https://git.openjdk.org/jdk/pull/27489