Remove redundant assert.

runtime/vm/bigint_operations_test.cc

 // Copyright (c) 2012, 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.
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/unit_test.h"
 
@@ skipping 135 matching lines @@
   bigint = BigintOperations::NewFromCString("123456");
   dbl = BigintOperations::ToDouble(bigint);
   EXPECT_EQ(123456.0, dbl.value());
 
   bigint = BigintOperations::NewFromCString("123456789");
   dbl = BigintOperations::ToDouble(bigint);
   EXPECT_EQ(123456789.0, dbl.value());
 
   bigint = BigintOperations::NewFromCString("12345678901234567");
   dbl = BigintOperations::ToDouble(bigint);
-  EXPECT_EQ(12345678901234567.0, dbl.value());
   EXPECT_EQ(12345678901234568.0, dbl.value());
 
   bigint = BigintOperations::NewFromCString("98765432109876");
   dbl = BigintOperations::ToDouble(bigint);
   EXPECT_EQ(9.8765432109876e+13, dbl.value());
 
   bigint = BigintOperations::NewFromCString("0x17777777777778");
   dbl = BigintOperations::ToDouble(bigint);
   EXPECT_EQ(6605279453476728.0, dbl.value());
 
@@ skipping 2059 matching lines @@
       "123456789012345678901234567890123456789012345678901234567890123456789012"
       "345678901234567890123456789012345678901234567890123456789012345678901234"
       "567890123456789012345678901234567890123456789012345678901234567890123456"
       "789012345678901234567890123456789012345678901234567890123456789012345678"
       "90123456789012345678901234567890",
       "0x1234567890ABCDEF01234567890ABCDEF01234567890ABCDEF01234567890ABCDEF"
       "01234567890ABCDEE");
 }
 
 }  // namespace dart