[jdk17u-dev] RFR: 8337723: Remove redundant tests from com/sun/security/sasl/gsskerb

[Goetz Lindenmaier]

I backport this for parity with 17.0.18-oracle.

Needed to resolve. 
* ProblemList 
* deleting some files as "8267108: Alternate Subject.getSubject and doAs APIs that do not depend on Security Manager APIs" is not in 17

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Commit messages:
 - backport 8e7ffeda908792ce5f4697af0897ec3848bf8d73

Changes: https://git.openjdk.org/jdk17u-dev/pull/3923/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3923&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8337723
  Stats: 934 lines in 12 files changed: 58 ins; 859 del; 17 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3923.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3923/head:pull/3923

PR: https://git.openjdk.org/jdk17u-dev/pull/3923