fixed 4e604cdc from https://gitee.com/hufeng20/third_party_jerryscript/pulls/55

fix jerryscript OAT warning
Signed-off-by: Nhufeng <hufeng20@huawei.com>
Change-Id: I6c7143839b11a5e01a1c5c4708857891f051f929

OAT.xml

@@ -56,7 +56,7 @@ Note:If the text contains special characters, please escape them according to th
 -->
 <configuration>
     <oatconfig>
-        <licensefile>COPYRIGHT_JERRYSCRIPT</licensefile>
+        <licensefile></licensefile>
         <policylist>
             <policy name="projectPolicy" desc="">
             </policy>