C++: Get rid of {Name,Type}::isEqualTo()

...since it's superseded by the class Matcher.

For consistency, rename FullySpecifiedType::isEqualTo() to match().

Change-Id: I07640f9218d814e0350265de45f05929e5d595a9
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

src/libs/3rdparty/cplusplus/Literals.h

@@ -106,8 +106,6 @@ public:
 
     virtual const Identifier *identifier() const { return this; }
 
-    virtual bool isEqualTo(const Name *other) const;
-
     virtual const Identifier *asNameId() const
     { return this; }