【fix】remove local_sql_plugin judgment

Author: FlechazoW

core/src/main/java/com/dtstack/flink/sql/parser/SqlParser.java

@@ -64,10 +64,6 @@ public static SqlTree parseSql(String sql) throws Exception {
             throw new RuntimeException("sql is not null");
         }
 
-        if(LOCAL_SQL_PLUGIN_ROOT == null){
-            throw new RuntimeException("need to set local sql plugin root");
-        }
-
         sql = DtStringUtil.dealSqlComment(sql)
                 .replaceAll("\r\n", " ")
                 .replaceAll("\n", " ")