[jdk17u-dev] RFR: 8291595: [17u] Delete files missed in backport of 8269039

[Goetz Lindenmaier]

Just deleted the files.
I missed deleting them when I backported  8269039: Disable SHA-1 Signed JARs

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Commit messages:
 - 8291595: [17u] Delete file missed in backport of 8269039

Changes: https://git.openjdk.org/jdk17u-dev/pull/617/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=617&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291595
  Stats: 0 lines in 2 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/617.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/617/head:pull/617

PR: https://git.openjdk.org/jdk17u-dev/pull/617