Remove instructions and infrastructure related to IDEFs that is now obsolete (and was never turned …

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index e40316592f4b0c00af213630d307d78d8ba547b7..221f61b0db10443828bbc71dc05f321aa7586f2e 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -1745,17 +1745,6 @@ LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoNumericConstraint(HNumericConstraint* instr) {
-  return NULL;
-}
-
-
-LInstruction* LChunkBuilder::DoInductionVariableAnnotation(
-    HInductionVariableAnnotation* instr) {
-  return NULL;
-}
-
-
 LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) {
   LOperand* value = UseRegisterOrConstantAtStart(instr->index());
   LOperand* length = Use(instr->length());