Revert "e2e test: Ignore network-mode config property for non linux platform"

This reverts commit 557ec94.

We no longer set network-mode as part of the tests, so this code is not
needed.

Author: cfergeau

test/e2e/testsuite/testsuite.go

@@ -951,10 +951,6 @@ func setPodmanEnv() error {
 }
 
 func SetConfigPropertyToValueSucceedsOrFails(property string, value string, expected string) error {
-	// Since network-mode is only supported on Linux, we skip this property test for non-linux platforms
-	if property == "network-mode" && runtime.GOOS != "linux" {
-		return nil
-	}
 	if value == "current bundle" {
 		if !userProvidedBundle {
 			value = filepath.Join(util.CRCHome, "cache", bundleName)