[ignition] Reuse code-stub-assembler's context load operations.

src/interpreter/interpreter-assembler.h

Index: src/interpreter/interpreter-assembler.h
diff --git a/src/interpreter/interpreter-assembler.h b/src/interpreter/interpreter-assembler.h
index 6450ec978f5a4a2649e603b82f1d7870a0552221..608bdbec02f85e02777211998189d3b02060809a 100644
--- a/src/interpreter/interpreter-assembler.h
+++ b/src/interpreter/interpreter-assembler.h
@@ -94,7 +94,6 @@ class V8_EXPORT_PRIVATE InterpreterAssembler : public CodeStubAssembler {
   compiler::Node* LoadAndUntagConstantPoolEntry(compiler::Node* index);
 
   // Load |slot_index| from |context|.
-  compiler::Node* LoadContextSlot(compiler::Node* context, int slot_index);
   compiler::Node* LoadContextSlot(compiler::Node* context,
                                   compiler::Node* slot_index);
   // Stores |value| into |slot_index| of |context|.