ci: simpler tokio features

Author: Taowyoo

ct.sh

@@ -26,7 +26,7 @@ if [ $TRAVIS_RUST_VERSION = "stable" ] || [ $TRAVIS_RUST_VERSION = "beta" ] || [
         cargo test --features rust_threading --target $TARGET
         cargo test --features custom_time,custom_gmtime_r --target $TARGET
         # test the async support
-        cargo test --test async_session --features=std,threading,tokio,tokio/net,tokio/io-util,tokio/macros,tokio/rt --target $TARGET
+        cargo test --test async_session --features=std,threading,tokio/full --target $TARGET
 
         # If zlib is installed, test the zlib feature
         if [ -n "$ZLIB_INSTALLED" ]; then