Remove remaining Security Manager usage in tests

[mbien]

some of it could be replaced with JFR, see selected snippet at #9151 (comment)

see TODOs in d385703

SM active in:

harness/apisupport.harness
ide/versioning
platform/core.startup.base
platform/core.startup
platform/masterfs
platform/netbinox
platform/o.n.bootstrap
platform/openide.execution
platform/openide.filesystems
platform/openide.loaders
platform/openide.util.lookup
platform/openide.util.ui