Remove unnecessary patch

patches/tock/05-backport-fix-1960.patch

@@ -1,13 +0,0 @@
-diff --git a/capsules/src/segger_rtt.rs b/capsules/src/segger_rtt.rs
-index 89a9ddbf..135e7b45 100644
---- a/capsules/src/segger_rtt.rs
-+++ b/capsules/src/segger_rtt.rs
-@@ -240,7 +240,7 @@ impl<'a, A: hil::time::Alarm<'a>> uart::Transmit<'a> for SeggerRtt<'a, A> {
- 
-                     // Start a short timer so that we get a callback and
-                     // can issue the callback to the client.
--                    let interval = (100 as u32) * <A::Frequency>::frequency() / 1000000;
-+                    let interval = (1000 as u32) * <A::Frequency>::frequency() / 1000000;
-                     let tics = self.alarm.now().wrapping_add(interval);
-                     self.alarm.set_alarm(tics);
-                 })