tests/image: remove the hack for fedora-30

Previously we had only tests for Fedora 30, therefore I added a hack to treat
every Fedora as Fedora 30, so the tests would run. Now, we have tests for
multiple Fedora versions, therefore the hack is no longer needed.

cmd/osbuild-image-tests/main_test.go

@@ -319,11 +319,6 @@ func runTests(t *testing.T, cases []string, d string) {
 				hostDistroName, err := distro.GetHostDistroName()
 				require.Nil(t, err)
 
-				// TODO: forge distro name for now
-				if strings.HasPrefix(hostDistroName, "fedora") {
-					hostDistroName = "fedora-30"
-				}
-
 				if testcase.ComposeRequest.Distro != hostDistroName {
 					t.Skipf("the required distro is %s, the host distro is %s", testcase.ComposeRequest.Distro, hostDistroName)
 				}