Remove unused package in circle.yml

Signed-off-by: Hui Kang <hkang.sunysb@gmail.com>

libnetwork/circle.yml

@@ -6,14 +6,9 @@ machine:
 
 dependencies:
   override:
-    - sudo apt-get update; sudo apt-get install -y iptables zookeeperd 
+    - sudo apt-get update; sudo apt-get install -y iptables zookeeperd
     - go get golang.org/x/tools/cmd/goimports
-    - go get golang.org/x/tools/cmd/cover
-    - go get github.com/tools/godep
-    - go get github.com/golang/lint/golint
-    - go get github.com/mattn/goveralls
 
 test:
   override:
     - make circle-ci
-