XML writer: remove type_hasher and remaining comment

The type_hasher functor is no longer used.

	* src/abg-writer.cc (type_hasher): Remove this unused functor.
	Remove a following comment referencing it.

Reviewed-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Giuliano Procida <gprocida@google.com>

1 files changed, 2 insertions, 11 deletions

diff --git a/src/abg-writer.cc b/src/abg-writer.cc
index 7906318e..c845f2c4 100644
--- a/src/abg-writer.cc
+++ b/src/abg-writer.cc
@@ -107,18 +107,9 @@ public:
   }
 };
 
-/// A hashing functor that should be as fast as possible.
-struct type_hasher
-{
-  size_t
-  operator()(const type_base* t) const
-  {return hash_type(t);}
-}; // end struct type_hasher
-
 /// A convenience typedef for a map that associates a pointer to type
-/// to a string.  The pointer to type is hashed as fast as possible.
-typedef unordered_map<type_base*,
-                      interned_string> type_ptr_map;
+/// to a string.
+typedef unordered_map<type_base*, interned_string> type_ptr_map;
 
 // A convenience typedef for a set of type_base*.
 typedef std::unordered_set<const type_base*> type_ptr_set_type;