hw/loongarch: Remove unimplemented extioi INT_encode mode

Remove extioi INT_encode encode mode, because we don't emulate it.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-Id: <20240718083254.748179-1-gaosong@loongson.cn>

Author: gaosong-loongson

include/hw/intc/loongarch_extioi.h

@@ -50,7 +50,6 @@
 #define  EXTIOI_HAS_CPU_ENCODE       (3)
 #define  EXTIOI_VIRT_HAS_FEATURES    (BIT(EXTIOI_HAS_VIRT_EXTENSION)  \
                                       | BIT(EXTIOI_HAS_ENABLE_OPTION) \
-                                      | BIT(EXTIOI_HAS_INT_ENCODE)    \
                                       | BIT(EXTIOI_HAS_CPU_ENCODE))
 #define EXTIOI_VIRT_CONFIG           (0x4)
 #define  EXTIOI_ENABLE               (1)