Fix stats incompatibility with g++ 3.4.

base/statistics.hh:
    Get rid of operator%... g++ 3.4 complains that this isn't defined
    for doubles (which makes sense).  We never use it anyway.

--HG--
extra : convert_revision : 3ca724e1cc42559226549835f6cd3509308e02ca

base/statistics.hh

@@ -2872,12 +2872,6 @@ operator/(Temp l, Temp r)
     return NodePtr(new BinaryNode<std::divides<Result> >(l, r));
 }
 
-inline Temp
-operator%(Temp l, Temp r)
-{
-    return NodePtr(new BinaryNode<std::modulus<Result> >(l, r));
-}
-
 inline Temp
 operator-(Temp l)
 {