MethodHandles: Remove obsolete TODO.

It was addressed by change 0d781e6e17a3f6285736c590001b59d50879f13b.

Test: make build-art-host
Change-Id: Ifb3f7fa2ffc245e88c77ca41268c376be1611308
diff --git a/runtime/interpreter/interpreter_common.cc b/runtime/interpreter/interpreter_common.cc
index 79a2a4d..5e4bb41 100644
--- a/runtime/interpreter/interpreter_common.cc
+++ b/runtime/interpreter/interpreter_common.cc
@@ -1144,8 +1144,6 @@
                                      uint32_t (&arg)[Instruction::kMaxVarArgRegs],
                                      uint32_t first_src_reg,
                                      const MethodHandleKind handle_kind) {
-  // TODO(narayan): Wire in the String.init hacks.
-
   // Compute method information.
   const DexFile::CodeItem* code_item = called_method->GetCodeItem();