Bug 1559275 - Remove unused CompileOptions::isProbablySystemCode. r=jandem

Differential Revision: https://phabricator.services.mozilla.com/D34977

--HG--
extra : moz-landing-system : lando

js/public/CompileOptions.h

@@ -114,7 +114,6 @@ class JS_PUBLIC_API TransitiveCompileOptions {
   bool forceAsync = false;
   bool sourceIsLazy = false;
   bool allowHTMLComments = true;
-  bool isProbablySystemCode = false;
   bool hideScriptFromDebugger = false;
   bool bigIntEnabledOption = false;
   bool fieldsEnabledOption = false;

js/src/jsapi.cpp

@@ -3473,7 +3473,6 @@ void JS::TransitiveCompileOptions::copyPODTransitiveOptions(
   introductionLineno = rhs.introductionLineno;
   introductionOffset = rhs.introductionOffset;
   hasIntroductionInfo = rhs.hasIntroductionInfo;
-  isProbablySystemCode = rhs.isProbablySystemCode;
   hideScriptFromDebugger = rhs.hideScriptFromDebugger;
   bigIntEnabledOption = rhs.bigIntEnabledOption;
   fieldsEnabledOption = rhs.fieldsEnabledOption;
@@ -3561,7 +3560,6 @@ JS::CompileOptions::CompileOptions(JSContext* cx)
       scriptOrModuleRoot(cx) {
   strictOption = cx->options().strictMode();
   extraWarningsOption = cx->realm()->behaviors().extraWarnings(cx);
-  isProbablySystemCode = cx->realm()->isProbablySystemCode();
   werrorOption = cx->options().werror();
   if (!cx->options().asmJS()) {
     asmJSOption = AsmJSOption::Disabled;