Deprecate the "" operator, and isEqP

While a cool example of how to do string matching in constexpr space,
the set of verbs available to HTTP has been fixed for a very long time.

This was ported over to beast a while back, but we kept the API for....
mediocre reasons of backward compatibility.  Remove that, and delete the
now unused code.

Tested: Built and loaded on a Witherspoon. Validator passes.

Signed-off-by: Ed Tanous <ed.tanous@intel.com>
Change-Id: Iaf048e196f9b6e71983189877203bf80390df286
Signed-off-by: James Feist <james.feist@linux.intel.com>
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/include/redfish_v1.hpp b/include/redfish_v1.hpp
index 3a4b9f5..dfdb900 100644
--- a/include/redfish_v1.hpp
+++ b/include/redfish_v1.hpp
@@ -17,7 +17,7 @@
 void requestRoutes(Crow<Middlewares...>& app)
 {
     BMCWEB_ROUTE(app, "/redfish/")
-        .methods("GET"_method)(
+        .methods(boost::beast::http::verb::get)(
             [](const crow::Request& req, crow::Response& res) {
                 res.jsonValue = {{"v1", "/redfish/v1/"}};
                 res.end();