RFR: 8366578: Remove the field tagSize in various QuicPacketEncoder.OutgoingQuicPacket subclasses

[Daniel Jeliński]

Remove unused tagSize fields. Testing clean.

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Commit messages:
 - remove unused tagSize fields

Changes: https://git.openjdk.org/jdk/pull/28578/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28578&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8366578
  Stats: 8 lines in 1 file changed: 0 ins; 8 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28578.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28578/head:pull/28578

PR: https://git.openjdk.org/jdk/pull/28578