JDK-8304725 fixed issue when calling AsyncGetCallTrace can trigger writing into the PcDescCache and causing a SIGBUS error when the current thread is not WXWrite mode on M cpu.
It happened because PcDescCache was embedded into nmethod header located together with code in CodeCache.

JDK-8330181 moves PcDescCache from nmethod header and from CodeCache. As result the code added by JDK-8304725 is not needed anymore and can be removed after JDK-8330181 is integrated.