misc: remove unused bits of code

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

cmd/flux/main_test.go

@@ -340,8 +340,6 @@ type cmdTestCase struct {
 	// Tests use assertFunc to assert on an output, success or failure. This
 	// can be a function defined by the test or existing function above.
 	assert assertFunc
-	// Filename that contains yaml objects to load into Kubernetes
-	objectFile string
 }
 
 func (cmd *cmdTestCase) runTestCmd(t *testing.T) {