tcg/ppc: Remove dead cases from tcg_target_op_def

Missed some lines when converting to TCGOutOpQemuLdSt*.

Fixes: 86fe5c2597 ("tcg: Convert qemu_st{2} to TCGOutOpLdSt{2}")
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

tcg/ppc/tcg-target.c.inc

@@ -4435,12 +4435,6 @@ static TCGConstraintSetIndex
 tcg_target_op_def(TCGOpcode op, TCGType type, unsigned flags)
 {
     switch (op) {
-    case INDEX_op_qemu_st:
-        return C_O0_I2(r, r);
-    case INDEX_op_qemu_st2:
-        return TCG_TARGET_REG_BITS == 64
-               ? C_O0_I3(o, m, r) : C_O0_I3(r, r, r);
-
     case INDEX_op_add_vec:
     case INDEX_op_sub_vec:
     case INDEX_op_mul_vec: