RFR: 8301443: Clean broken comments from Windows code

[Julian Waters]

Several comments are technically broken in Windows code, this change cleans up the broken comments that managed to slip past reviewers during Integration

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Commit messages:
 - Partial Revert
 - sspi.cpp
 - Comments

Changes: https://git.openjdk.org/jdk/pull/12305/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12305&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301443
  Stats: 13 lines in 11 files changed: 0 ins; 1 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/12305.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12305/head:pull/12305

PR: https://git.openjdk.org/jdk/pull/12305