Remove undocumented designation from aapt_version attribute.
For some reason we don't fully understand, this attribute appears in[]
@@ -863,7 +863,6 @@ public final class AndroidRuleClasses {
<!-- #END_BLAZE_RULE.ATTRIBUTE --> */
.add(
attr("aapt_version", STRING)
- .undocumented("experimental, b/28819519")
.allowedValues(new AllowedValueSet(AndroidAaptVersion.getAttributeValues()))
.value(AndroidAaptVersion.getRuleAttributeDefault()))
.add(
