RFR: 8344214: Remove Security Manager dependencies from jdk.crypto.mscapi module

[Sean Mullan]

Now that JEP 486 is integrated, the jdk.crypto.mscapi module implementation dependencies on System.getSecurityManager and AccessController.doPrivileged can be removed.

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Commit messages:
 - Initial cleanup.

Changes: https://git.openjdk.org/jdk/pull/22112/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22112&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344214
  Stats: 141 lines in 2 files changed: 0 ins; 32 del; 109 mod
  Patch: https://git.openjdk.org/jdk/pull/22112.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22112/head:pull/22112

PR: https://git.openjdk.org/jdk/pull/22112