remove an unnecessary file
diff --git a/sshconfig b/sshconfig
deleted file mode 100644
index 95d1af6..0000000
--- a/sshconfig
+++ /dev/null
@@ -1,12 +0,0 @@
-Host default
-  HostName 127.0.0.1
-  User vagrant
-  Port 2222
-  UserKnownHostsFile /dev/null
-  StrictHostKeyChecking no
-  PasswordAuthentication no
-  IdentityFile /Users/ksawada/src/github/openwhisk/tools/vagrant/.vagrant/machines/default/virtualbox/private_key
-  IdentitiesOnly yes
-  LogLevel FATAL
-  ForwardAgent yes
-