Remove unused projection parameter

modules/actions/flip.js

@@ -3,7 +3,7 @@ import _ from 'lodash';
 Only operates on "area" ways
 */
 
-export function actionFlip(wayId, isVertical, projection) {
+export function actionFlip(wayId, isVertical) {
 
     return function (graph) {        
         const targetWay = graph.entity(wayId);

modules/operations/flipHorizontal.js

@@ -7,7 +7,7 @@ export function operationFlipHorizontal(selectedIDs, context) {
 
     var operation = function() {
         context.perform(
-            actionFlip(entityId, false, context.projection),
+            actionFlip(entityId, false),
             t('operations.flipHorizontal.annotation')
         );
     };

modules/operations/flipVertical.js

@@ -7,7 +7,7 @@ export function operationFlipVertical(selectedIDs, context) {
 
     var operation = function() {
         context.perform(
-            actionFlip(entityId, true, context.projection),
+            actionFlip(entityId, true),
             t('operations.flipVertical.annotation')
         );
     };