Remove namespace in http layer

Within this namespace, we don't need to call crow, we are already in the
crow namespace.

Tested: Code compiles.

Change-Id: Ida57624ef1157f98f2719b5c3af536aebaca601e
Signed-off-by: Ed Tanous <etanous@nvidia.com>
diff --git a/test/http/router_test.cpp b/test/http/router_test.cpp
index 63b7c11..4371e7e 100644
--- a/test/http/router_test.cpp
+++ b/test/http/router_test.cpp
@@ -21,7 +21,7 @@
 namespace
 {
 
-using ::crow::utility::getParameterTag;
+using utility::getParameterTag;
 
 TEST(Router, AllowHeader)
 {