Revert "Add mechanism to postpone interrupts selectively."

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index af237524101c133d2034aad9273b36f9a7e98c15..9bffca25a2ddedf955f3cb4e4642a0b4487504bd 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -2371,15 +2371,4 @@ bool StackLimitCheck::JsHasOverflowed() const {
 }
 
 
-bool PostponeInterruptsScope::Intercept(StackGuard::InterruptFlag flag) {
-  // First check whether the previous scope intercepts.
-  if (prev_ && prev_->Intercept(flag)) return true;
-  // Then check whether this scope intercepts.
-  if ((flag & intercept_mask_)) {
-    intercepted_flags_ |= flag;
-    return true;
-  }
-  return false;
-}
-
 } }  // namespace v8::internal