remove useless patch

patch/kernel/rockchip64-dev/timekeeping32-tweaks-for-4.20.y.patch

@@ -1,24 +0,0 @@
-diff --git a/include/linux/timekeeping32.h b/include/linux/timekeeping32.h
-index a502616..43a3837 100644
---- a/include/linux/timekeeping32.h
-+++ b/include/linux/timekeeping32.h
-@@ -53,6 +53,19 @@ static inline void getboottime(struct timespec *ts)
- }
- 
- /*
-+ * Timespec interfaces utilizing the ktime based ones
-+ */
-+static inline void get_monotonic_boottime(struct timespec *ts)
-+{
-+	*ts = ktime_to_timespec(ktime_get_boottime());
-+}
-+
-+static inline void timekeeping_clocktai(struct timespec *ts)
-+{
-+	*ts = ktime_to_timespec(ktime_get_clocktai());
-+}
-+
-+/*
-  * Persistent clock related interfaces
-  */
- extern void read_persistent_clock(struct timespec *ts);