Removing DateTimeInputElement.

tools/dom/templates/html/impl/impl_HTMLInputElement.darttemplate

Index: tools/dom/templates/html/impl/impl_HTMLInputElement.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_HTMLInputElement.darttemplate b/tools/dom/templates/html/impl/impl_HTMLInputElement.darttemplate
index deced63f3abccf74fd11f234913b51ff4a4e0bb0..bcac38d718c815385ecbae66eca6536540e9ff7f 100644
--- a/tools/dom/templates/html/impl/impl_HTMLInputElement.darttemplate
+++ b/tools/dom/templates/html/impl/impl_HTMLInputElement.darttemplate
@@ -12,7 +12,6 @@ $(ANNOTATIONS)class $CLASSNAME$EXTENDS implements
     TelephoneInputElement,
     EmailInputElement,
     PasswordInputElement,
-    DateTimeInputElement,
     DateInputElement,
     MonthInputElement,
     WeekInputElement,
@@ -303,32 +302,6 @@ abstract class RangeInputElementBase implements InputElementBase {
 }
 
 /**
- * A date and time (year, month, day, hour, minute, second, fraction of a
- * second) with the time zone set to UTC.
- *
- * Use [supported] to check if this is supported on the current platform.
- */
-@SupportedBrowser(SupportedBrowser.CHROME, '25')
-@Experimental
-abstract class DateTimeInputElement implements RangeInputElementBase {
-  factory DateTimeInputElement() => new InputElement(type: 'datetime');
-
-  @DomName('HTMLInputElement.valueAsDate')
-  DateTime valueAsDate;
-
-  @DomName('HTMLInputElement.readOnly')
-  bool readOnly;
-
-  @DomName('HTMLInputElement.required')
-  bool required;
-
-  /// Returns true if this input type is supported on the current platform.
-  static bool get supported {
-    return (new InputElement(type: 'datetime')).type == 'datetime';
-  }
-}
-
-/**
  * A date (year, month, day) with no time zone.
  *
  * Use [supported] to check if this is supported on the current platform.