Remove some debug code (#72985)

Remove some debug code (#72985)

* Remove stale debug code

Remove the FreeBuildDebugBreak() and DebBreak() API.
Remove BreakOnRetailAssert config knob.
Remove DBGIGNORE logic.
Remove LaunchJITDebugger() API from utilcode.
Remove x86 StackOverflow break config
Remove INTERNAL_DebugBreakOnAssert config knob
Remove unused debug macros and constants
Remove TerminateOnAssert() and DebugBreakOnAssert() logic.
Remove unused NGen bind config knobs
Remove ValidateObject() from rspriv.