Drop e2e test msg testing: warning: no tests to run (#2509)

Since migration to Godog framework, there are no other Go tests in `test/e2e` folder.
Hence, we can skip their potential execution in `features_test/TestMain` and avoid
getting the warning printed on the console.

Author: pedjak

test/e2e/features_test.go

@@ -38,9 +38,6 @@ func TestMain(m *testing.M) {
 		Options:              &opts,
 	}.Run()
 
-	if st := m.Run(); st > sc {
-		sc = st
-	}
 	switch sc {
 	//	0 - success
 	case 0: