tcg/loongarch64: remove break after g_assert_not_reached()

This patch is part of a series that moves towards a consistent use of
g_assert_not_reached() rather than an ad hoc mix of different
assertion mechanisms.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20240919044641.386068-25-pierrick.bouvier@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tcg/loongarch64/tcg-target.c.inc

@@ -650,7 +650,6 @@ static int tcg_out_setcond_int(TCGContext *s, TCGCond cond, TCGReg ret,
 
     default:
         g_assert_not_reached();
-        break;
     }
 
     return ret | flags;