fix(igxGrid): Remove unnecessary code since correct page is already calculated and set correctly in the Grid Paging pipe.

Author: MKirova

projects/igniteui-angular/src/lib/grids/api.service.ts

@@ -540,10 +540,6 @@ export class GridBaseAPIService <T extends IgxGridBaseDirective & GridType> {
         return false;
     }
 
-    public atInexistingPage(): boolean {
-        return this.grid.totalPages - 1 > this.grid.page;
-    }
-
     public get_row_expansion_state(record: any): boolean {
         const grid = this.grid;
         const states = grid.expansionStates;

projects/igniteui-angular/src/lib/grids/grid-base.directive.ts

@@ -2640,12 +2640,6 @@ export class IgxGridBaseDirective extends DisplayDensityBase implements
             this.summaryService.clearSummaryCache();
             this._pipeTrigger++;
             this.notifyChanges();
-            if (this.transactions.getAggregatedChanges(false).length === 0) {
-                // Needs better check, calling 'transactions.clear()' will also trigger this
-                if (this.gridAPI.atInexistingPage()) {
-                    this.page--;
-                }
-            }
         });
 
         this.resizeNotify.pipe(destructor, filter(() => !this._init), throttleTime(100))

src/app/grid-row-edit/grid-row-edit-sample.component.html

@@ -91,7 +91,7 @@ <h4>Cancel Grid Edit Events</h4>
             </div>
             <app-grid-with-transactions>
                 <igx-grid #gridRowEditTransaction [data]="data" [primaryKey]="'ProductID'" width="900px" height="700px"
-                    [rowEditable]="true" [paging]="true" [perPage]="10" (onRowEdit)="rowEditDone($event)"
+                    [rowEditable]="true" [paging]="true" [perPage]="5" (onRowEdit)="rowEditDone($event)"
                     (onRowEditCancel)="rowEditCancel($event)" (onRowEditEnter)="rowEditEnter($event)"
                     (onCellEditEnter)="cellEnterEditMode($event)" (onCellEdit)="cellEditDone($event)"
                     (onCellEditCancel)="cellEditCancel($event)">