Cleanup fixes (#1422)

* cleanup: remove dead code

removing some code that does nothing

* cleanup: fixing usage of deprecated gqlgen/graphql api in api/changeset_translator

* cleanup: changing to recommended comparison methods

Changing byte and case-insensitive string comparison to the recommended methods.

* cleanup: making staticcheck happy

pkg/api/resolver_model_scene.go

@@ -161,8 +161,7 @@ func (r *sceneResolver) Movies(ctx context.Context, obj *models.Scene) (ret []*m
 			}
 
 			if sceneIdx.Valid {
-				var idx int
-				idx = int(sceneIdx.Int64)
+				idx := int(sceneIdx.Int64)
 				sceneMovie.SceneIndex = &idx
 			}