ScopedTaskSuspend test: remove extraneous CheckedReadFDAtEOF()

util/mach/scoped_task_suspend_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 53 matching lines @@
         EXPECT_EQ(2, SuspendCount(child_task));
       }
 
       EXPECT_EQ(1, SuspendCount(child_task));
     }
 
     EXPECT_EQ(0, SuspendCount(child_task));
   }
 
   void MachMultiprocessChild() override {
-    CheckedReadFDAtEOF(ReadPipeFD());
   }
 
   DISALLOW_COPY_AND_ASSIGN(ScopedTaskSuspendTest);
 };
 
 TEST(ScopedTaskSuspend, ScopedTaskSuspend) {
   ScopedTaskSuspendTest scoped_task_suspend_test;
   scoped_task_suspend_test.Run();
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad