Remove deprecated getDefaultLanguages

Author: msimacek

graalpython/com.oracle.graal.python.shell/src/com/oracle/graal/python/shell/GraalPythonMain.java

@@ -1167,11 +1167,6 @@ protected void printHelp(OptionCategory maxCategory) {
                                         "\nEnvironment variables specific to the Graal Python launcher:\n" : ""));
     }
 
-    @Override
-    protected String[] getDefaultLanguages() {
-        return new String[]{getLanguageId(), "llvm", "regex"};
-    }
-
     @Override
     protected void collectArguments(Set<String> options) {
         // This list of arguments is used when we are launched through the Polyglot