Revert of [turbofan] Add the StackSlot operator to turbofan.

src/compiler/ia32/code-generator-ia32.cc

Index: src/compiler/ia32/code-generator-ia32.cc
diff --git a/src/compiler/ia32/code-generator-ia32.cc b/src/compiler/ia32/code-generator-ia32.cc
index 0d51913868e7a24de0b88f99526f91e8896c818b..b52146b4d24a2c08d970a56951df08947d123ff4 100644
--- a/src/compiler/ia32/code-generator-ia32.cc
+++ b/src/compiler/ia32/code-generator-ia32.cc
@@ -497,18 +497,6 @@
                        MemoryChunk::kPointersFromHereAreInterestingMask,
                        not_zero, ool->entry());
       __ bind(ool->exit());
-      break;
-    }
-    case kArchStackSlot: {
-      FrameOffset offset =
-          frame_access_state()->GetFrameOffset(i.InputInt32(0));
-      Register base;
-      if (offset.from_stack_pointer()) {
-        base = esp;
-      } else {
-        base = ebp;
-      }
-      __ lea(i.OutputRegister(), Operand(base, offset.offset()));
       break;
     }
     case kIA32Add: