Remove the ruby refdb backend code again.

Author: arthurschreiber

ext/rugged/rugged.c

@@ -485,7 +485,6 @@ void Init_rugged(void)
 
 	Init_rugged_refdb();
 	Init_rugged_refdb_backend();
-	Init_rugged_refdb_backend_custom();
 	Init_rugged_refdb_backend_fs();
 
 	Init_rugged_odb();

ext/rugged/rugged.h

@@ -82,7 +82,6 @@ void Init_rugged_cred(void);
 void Init_rugged_backend(void);
 void Init_rugged_refdb(void);
 void Init_rugged_refdb_backend(void);
-void Init_rugged_refdb_backend_custom(void);
 void Init_rugged_refdb_backend_fs(void);
 void Init_rugged_odb(void);
 void Init_rugged_odb_backend(void);

ext/rugged/rugged_refdb_backend_custom.c

@@ -24,42 +24,4 @@ def test_set_backend_reuse_error
       refdb.backend = backend
     end
   end
-
-  def test_custom_backend
-    refdb = Rugged::Refdb.new(@repo)
-
-    compress_calls = 0
-    backend = Rugged::Refdb::Backend::Custom.new(@repo)
-    backend.send(:define_singleton_method, :compress) do
-      compress_calls += 1
-    end
-
-    refdb.backend = backend
-    refdb.compress
-
-    assert_equal 1, compress_calls
-  end
-end
-
-class RefdbBackendCustomTest < Rugged::TestCase
-  def setup
-    @repo = FixtureRepo.from_rugged("testrepo.git")
-    @refdb = Rugged::Refdb.new(@repo)
-    @backend = Rugged::Refdb::Backend::Custom.new(@repo)
-    @refdb.backend = @backend
-    @repo.refdb = @refdb
-  end
-
-  def test_lookup
-    @backend.send(:define_singleton_method, :lookup) do |ref_name|
-      "1385f264afb75a56a5bec74243be9b367ba4ca08" if ref_name == "refs/heads/master"
-    end
-
-    ref = @repo.references["refs/heads/master"]
-    assert ref
-    assert_equal "refs/heads/master", ref.name
-    assert_equal "1385f264afb75a56a5bec74243be9b367ba4ca08", ref.target_id
-
-    assert_nil @repo.references["refs/heads/development"]
-  end
 end