[debugger] remove debugger statement support from FCG/CS.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 4ac2ad6c40c57f64f63a22ac5b5472639d58519b..e6323e4ce745250a0d94798841304b9398f3c5c3 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -1904,16 +1904,6 @@ void MacroAssembler::IsObjectNameType(Register object,
   b(hi, fail);
 }
 
-
-void MacroAssembler::DebugBreak() {
-  mov(r0, Operand::Zero());
-  mov(r1,
-      Operand(ExternalReference(Runtime::kHandleDebuggerStatement, isolate())));
-  CEntryStub ces(isolate(), 1);
-  DCHECK(AllowThisStubCall(&ces));
-  Call(ces.GetCode(), RelocInfo::DEBUGGER_STATEMENT);
-}
-
 void MacroAssembler::MaybeDropFrames() {
   // Check whether we need to drop frames to restart a function on the stack.
   ExternalReference restart_fp =