Remove alias now that it's no longer used.
@@ -3034,12 +3034,6 @@ public class CompilerOptions implements Serializable {
}
// Trim spaces, disregard case, and allow abbreviation of ECMASCRIPT for convenience.
String canonicalizedName = Ascii.toUpperCase(value.trim()).replaceFirst("^ES", "ECMASCRIPT");
-
- // TODO(tbreisacher): Remove this when all usages are gone.
- if (canonicalizedName.equals("ECMASCRIPT8")) {
- return ECMASCRIPT_2017;
- }
-
try {
return LanguageMode.valueOf(canonicalizedName);
} catch (IllegalArgumentException e) {
