Remove temporary workaround in end-to-end test for iotedge check (Azu…

…re#7292)

There was a period of a few weeks between when we updated the version in the code to 1.5.0 and when we actually shipped 1.5.0. During that window of time, one of the end-to-end tests would have failed so we added a workaround. Now that we've shipped 1.5.0, this change removes the workaround.

I ran the end-to-end tests and verified that the IotEdgeCheck test passes.

## Azure IoT Edge PR checklist:

test/Microsoft.Azure.Devices.Edge.Test/IoTEdgeCheck.cs

@@ -48,9 +48,6 @@ public async Task IotEdgeCheck()
                 });
             }
 
-            // TODO: Temporarily override expected aziot & iotedge versions until after we release 1.5.0
-            args += " --expected-aziot-version 1.5.0 --expected-aziot-edged-version 1.5.0";
-
             string errors_number = string.Empty;
 
             void OnStdout(string o)