Open the PerformanceExplorer in Visual Studio by using the Menu Analyze -> Windows -> PerformanceExplorer and check if it lists any session entries.
If so delete them by doing a right-click on an entry to open the ContextMenu. Then select “Remove” from the menu.
You should also check the folder of your solution if it contains any .vsp or .psess files and delete them. These are the report files of a profiling session.