Time::timeName(): no longer needed, calls replaced by name()

The timeName() function simply returns the dimensionedScalar::name() which holds
the user-time name of the current time and now that timeName() is no longer
virtual the dimensionedScalar::name() can be called directly.  The timeName()
function implementation is maintained for backward-compatibility.

tutorials/basic/potentialFoam/cylinder/system/controlDict

@@ -103,7 +103,7 @@ functions
                 IOobject
                 (
                     "UA",
-                    mesh().time().timeName(),
+                    mesh().time().name(),
                     U.mesh(),
                     IOobject::NO_READ,
                     IOobject::AUTO_WRITE