remove redundant Kitura-net, update Kitura-request

Author: king

Package.swift

@@ -8,8 +8,7 @@ let package = Package(
     ],  
   dependencies: [
     .Package(url: "https://github.com/RuntimeTools/omr-agentcore.git", majorVersion: 3),
-    .Package(url: "https://github.com/IBM-Swift/Kitura-net.git", majorVersion: 1, minor: 6),
-    .Package(url: "https://github.com/IBM-Swift/Kitura-Request.git", majorVersion: 0, minor: 6),
+    .Package(url: "https://github.com/IBM-Swift/Kitura-Request.git", majorVersion: 0, minor: 7),
     .Package(url: "https://github.com/IBM-Swift/SwiftyJSON.git", majorVersion: 15),
     .Package(url: "https://github.com/IBM-Swift/Swift-cfenv.git", majorVersion: 2, minor: 0)
   ]