update README.md

Author: superbear

README.md

@@ -37,5 +37,5 @@ Flink SQL> exit;
 ```
 
 ## References
-[Flink User-defined Functions](https://nightlies.apache.org/flink/flink-docs-master/docs/dev/table/functions/udfs/)
-[Flink Docker Setup](https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/resource-providers/standalone/docker/)
+- [Flink User-defined Functions](https://nightlies.apache.org/flink/flink-docs-master/docs/dev/table/functions/udfs/)
+- [Flink Docker Setup](https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/resource-providers/standalone/docker/)

src/main/java/github/superbear/flink/udf/scalar/Atoi.java

@@ -9,8 +9,6 @@ public final class Atoi extends ScalarFunction {
      * String to int
      */
     public Long eval(String s) {
-        System.setProperty("jna.debug_load", "true");
-        System.setProperty("jna.debug_load.jna", "true");
         return Client.Atoi(s);
     }
 }