Remove unused authorized_find method

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/29921#note_184713939

doc/development/api_graphql_styleguide.md

@@ -447,7 +447,7 @@ want to validate the abilities for.
 
 Alternatively, we can add a `find_object` method that will load the
 object on the mutation. This would allow you to use the
-`authorized_find!` and `authorized_find!` helper methods.
+`authorized_find!` helper method.
 
 When a user is not allowed to perform the action, or an object is not
 found, we should raise a

lib/gitlab/graphql/authorize/authorize_resource.rb

@@ -27,12 +27,6 @@ module Gitlab
           raise NotImplementedError, "Implement #find_object in #{self.class.name}"
         end
 
-        def authorized_find(*args)
-          object = find_object(*args)
-
-          object if authorized?(object)
-        end
-
         def authorized_find!(*args)
           object = find_object(*args)
           authorize!(object)

spec/lib/gitlab/graphql/authorize/authorize_resource_spec.rb

@@ -34,12 +34,6 @@ describe Gitlab::Graphql::Authorize::AuthorizeResource do
       end
     end
 
-    describe '#authorized_find' do
-      it 'returns the object' do
-        expect(loading_resource.authorized_find).to eq(project)
-      end
-    end
-
     describe '#authorized_find!' do
       it 'returns the object' do
         expect(loading_resource.authorized_find!).to eq(project)
@@ -66,12 +60,6 @@ describe Gitlab::Graphql::Authorize::AuthorizeResource do
       end
     end
 
-    describe '#authorized_find' do
-      it 'returns `nil`' do
-        expect(loading_resource.authorized_find).to be_nil
-      end
-    end
-
     describe '#authorized_find!' do
       it 'raises an error' do
         expect { loading_resource.authorize!(project) }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
@@ -127,12 +115,6 @@ describe Gitlab::Graphql::Authorize::AuthorizeResource do
     end
     let(:error) { /#{fake_class.name} has no authorizations/ }
 
-    describe '#authorized_find' do
-      it 'raises a comprehensive error message' do
-        expect { loading_resource.authorized_find }.to raise_error(error)
-      end
-    end
-
     describe '#authorized_find!' do
       it 'raises a comprehensive error message' do
         expect { loading_resource.authorized_find! }.to raise_error(error)