Add test to check that `cfg::replace_insn()` removes `move-result` instruction
Add test to check that `cfg::replace_insn()` removes `move-result` instruction

Summary:
From the comments for `ControlFlowGraph::replace_insn` I expected the
`move-result` instruction to be removed when replacing its corresponding
instruction. I've added a test that replaces an `invoke-virtual` instruction
with a `nop` and I expect both the `invoke-virtual` and the `move-result`
instructions to be replaced with a `nop`.

Reviewed By: emma0303

Differential Revision: D16570566

fbshipit-source-id: 64b1f15cd71e1c0b1d808f9be0fe36a5ad54695c

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