Revert^2 "Add peak RSS stats to GC perf dump"

This reverts commit cc292c611af7cdea6a2d9196fc347468b9233f71.

Reason for revert: RSS code is enabled only on linux now.

Test: art/test/testrunner/testrunner.py --target --runtime-option=-XX:DumpGCPerformanceOnShutdown
Bug: b/112187497
Change-Id: Iea5926d3dd4f6248f85422627b6ee0da559beb39
9 files changed