Remove isOdd/isEven from num and double interfaces.

runtime/lib/double.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class Double implements double {
   factory Double.fromInteger(int value)
       native "Double_doubleFromInteger";
   int hashCode() {
     try {
       return toInt();
@@ skipping 72 matching lines @@
   }
   double moduloFromInteger(int other) {
     return new Double.fromInteger(other) % this;
   }
   double remainderFromInteger(int other) {
     return new Double.fromInteger(other).remainder(this);
   }
 
   bool greaterThanFromInteger(int other) native "Double_greaterThanFromInteger";
 
-  bool isEven() {
-    // TODO(floitsch): find more efficient way to implement Double.isEven.
-    return this % 2.0 == 0.0;
-  }
-  bool isOdd() {
-    // TODO(floitsch): find more efficient way to implement Double.isOdd.
-    return this % 2.0 == 1.0;
-  }
   bool isNegative() native "Double_isNegative";
   bool isInfinite() native "Double_isInfinite";
   bool isNaN() native "Double_isNaN";
 
   double abs() {
     // Handle negative 0.0.
     if (this == 0.0) return 0.0;  
     return this < 0.0 ? -this : this;
   }
 
@@ skipping 103 matching lines @@
         return EQUAL;
       }
     } else if (isNaN()) {
       return other.isNaN() ? EQUAL : GREATER;
     } else {
       // Other is NaN.
       return LESS;
     }
   }
 }