Revert "Make JVMTI DisposeEnvironment and GetEnv thread safe."

This reverts commit e5a2ae30bdbe379695dc886861b23dce57de0825.

Reason for revert: fails art-gc-gss-tlab column.
Test: None
Bug: 69465262

Change-Id: I70af77297bc7870d281ed8ffb319d144ddb12838
19 files changed