Native Clock: remove inaccuracy mask.

src/common/x64/native_clock.h

@@ -34,11 +34,6 @@ private:
         u64 accumulated_ticks{};
     };
 
-    /// value used to reduce the native clocks accuracy as some apss rely on
-    /// undefined behavior where the level of accuracy in the clock shouldn't
-    /// be higher.
-    static constexpr u64 inaccuracy_mask = ~(UINT64_C(0x400) - 1);
-
     std::atomic<TimePoint> time_point;
     // factors
     u64 clock_rtsc_factor{};