Remove the black_magic namespace

The black_magic namespace has been eradicated of what most would call
"black magic" and while there's some non-trivial stuff in there, it's
far from the most complicated part of this stack.

This commit takes the two remaining things in the black_magic namespace,
namely the parameter tagging functionality, and moves them into the
utility namespace.

Tested: Redfish service validator passes

Change-Id: I9e2686fff5ef498cafc4cb83d4d808ea849f7737
Signed-off-by: Ed Tanous <edtanous@google.com>
diff --git a/http/app.hpp b/http/app.hpp
index b983bec..0f0f47b 100644
--- a/http/app.hpp
+++ b/http/app.hpp
@@ -25,7 +25,7 @@
 
 // NOLINTNEXTLINE(cppcoreguidelines-macro-usage, clang-diagnostic-unused-macros)
 #define BMCWEB_ROUTE(app, url)                                                 \
-    app.template route<crow::black_magic::getParameterTag(url)>(url)
+    app.template route<crow::utility::getParameterTag(url)>(url)
 
 namespace crow
 {