avoid output from wsnet.

Author: Ginder-Singh

tools/build_wsnet.sh

@@ -9,6 +9,6 @@ git clone https://github.com/Windscribe/Desktop-App.git
 cd Desktop-App || exit
 git checkout 21a348471cca5c65ba6100c181da4b483f6fa8c8
 cd libs/wsnet/tools || exit
-./build_android.sh
+./build_android.sh > /dev/null 2>&1
 cp wsnet.aar "$DST_DIR"
 cd "$ROOT_DIR" && rm -rf tools/bin