Revert "修复以'pg_temp_'为命名前缀的模式可以创建成功的问题"

This reverts commit cbf877d467a63e54fa90ae3b09a0ec685247ccf1.

src/gausskernel/optimizer/commands/schemacmds.cpp

@@ -133,17 +133,6 @@ Oid CreateSchemaCommand(CreateSchemaStmt* stmt, const char* queryString)
                 errdetail("The prefix \"gs_role_\" is reserved.")));
     }
 
-#ifndef ENABLE_MULTIPLE_NODES
-    if (!g_instance.attr.attr_common.allowSystemTableMods &&
-        stmt->temptype == Temp_None &&
-        (isTempNamespaceName(stmt->schemaname) || isToastTempNamespaceName(stmt->schemaname))) {
-        ereport(ERROR,
-            (errcode(ERRCODE_RESERVED_NAME),
-                errmsg("unacceptable schema name \"%s\"", schemaName),
-                errdetail("The prefix \"pg_temp_\" is reserved.")));
-    }
-#endif
-
     /*
      * Who is supposed to own the new schema?
      */

src/gausskernel/process/postmaster/twophasecleaner.cpp

@@ -841,9 +841,7 @@ static void DropTempSchemas(PGconn* conn)
         if (thirdLastPos == NULL) {
             PQfinish(conn);
             conn = NULL;
-            elog(ERROR, "strrchr failed, can't find '%c' in '%s'. "
-                "the schema name '%s' is reserved, advise to delete manually\n",
-                '_', tempBuffer2, tempSchema->tempSchemaName);
+            elog(ERROR, "strrchr failed, can't find '%c' in '%s'\n", '_', tempBuffer2);
         }
         uint32 timeLineID = strtol(thirdLastPos + 1, NULL, 10);