message: fix(llvm-backend) Remove unused variables.
diff: @@ -487,7 +487,6 @@ fn parse_function(
  if let ControlFrame::IfElse {
  if_else,
  next,
  - phis,
  if_else_state,
  ..
  } = &frame
  @@ -863,7 +862,7 @@ fn parse_function(
  let value = call_site.try_as_basic_value().left().unwrap();
  state.push1(value);
  }
  - returns @ _ => unimplemented!("multi-value returns"),
  + _ => unimplemented!("multi-value returns"),
  }
  }
  @@ -2155,7 +2154,7 @@ fn parse_function(
  [one_value] => {
  builder.build_return(Some(one_value));
  }
  - returns @ _ => {
  + _ => {
  // let struct_ty = llvm_sig.get_return_type().as_struct_type();
  // let ret_struct = struct_ty.const_zero();
  unimplemented!("multi-value returns not yet implemented")
  @@ -2208,7 +2207,7 @@ fn trap_if_not_representatable_as_int(
  ),
  };
  - let masked = builder.build_and(
  + builder.build_and(
  float_bits,
  int_ty.const_int(exponent_mask, false),
  "masked_bits",
  