update drone.yml

drone.yml

     - rm -rf $CONTENT ;
       ls -la release
     - find release -type f -exec md5sum '{}' \;
-    - #░▒▓█ BUILD FINISHED █▓▒░#
+    - echo #░▒▓█ BUILD FINISHED █▓▒░# > /dev/null
 
 
 - name: sign