8223187: Remove setLocale() call in jpackage native launcher

Reviewed-by: kcr, herrick, naoto

src/jdk.incubator.jpackage/linux/native/applauncher/LinuxLauncher.cpp

@@ -44,8 +44,6 @@ size_t hash(const std::string& str) {
 }
 
 void launchApp() {
-    setlocale(LC_ALL, "en_US.utf8");
-
     const tstring launcherPath = SysInfo::getProcessModulePath();
 
     const Package ownerPackage = Package::findOwnerOfFile(launcherPath);

src/jdk.incubator.jpackage/macosx/native/applauncher/MacLauncher.cpp

@@ -67,7 +67,6 @@ void initJvmLauncher() {
 
 
 int main(int argc, char *argv[]) {
-    setlocale(LC_ALL, "en_US.utf8");
     if (jvmLauncher) {
         // This is the call from the thread spawned by JVM.
         // Skip initialization phase as we have done this already in the first