fixed a1f6298d from https://gitee.com/liangshenglin1/communication_ipc/pulls/22

remove macro BINDER_IPC_32BIT
Signed-off-by: Nliangshenglin <liangshenglin1@huawei.com>

BUILD.gn

@@ -31,9 +31,6 @@ config("ipc_util_config") {
   if (is_double_framework) {
     cflags = [ "-DCONFIG_DUAL_FRAMEWORK" ]
   }
-  if (target_cpu == "arm") {
-    cflags += [ "-DBINDER_IPC_32BIT" ]
-  }
   if (is_standard_system) {
     cflags += [ "-DCONFIG_STANDARD_SYSTEM" ]
   }

interfaces/innerkits/libdbinder/BUILD.gn

@@ -19,9 +19,6 @@ DBINDER_ROOT = "$SUBSYSTEM_DIR/services/dbinder"
 config("libdbinder_config") {
   visibility = [ ":*" ]
   cflags = []
-  if (target_cpu == "arm") {
-    cflags = [ "-DBINDER_IPC_32BIT" ]
-  }
   if (is_standard_system) {
     cflags += [ "-DCONFIG_STANDARD_SYSTEM" ]
   }