Fix clippy errors

Author: jamesmunns

embedded-hal-bus/src/i2c/mutex.rs

@@ -19,14 +19,14 @@ impl<'a, T> MutexDevice<'a, T> {
     }
 }
 
-impl<'a, T> ErrorType for MutexDevice<'a, T>
+impl<T> ErrorType for MutexDevice<'_, T>
 where
     T: I2c,
 {
     type Error = T::Error;
 }
 
-impl<'a, T> I2c for MutexDevice<'a, T>
+impl<T> I2c for MutexDevice<'_, T>
 where
     T: I2c,
 {

embedded-hal-bus/src/spi/mutex.rs

@@ -70,15 +70,15 @@ impl<'a, BUS, CS> MutexDevice<'a, BUS, CS, super::NoDelay> {
     }
 }
 
-impl<'a, BUS, CS, D> ErrorType for MutexDevice<'a, BUS, CS, D>
+impl<BUS, CS, D> ErrorType for MutexDevice<'_, BUS, CS, D>
 where
     BUS: ErrorType,
     CS: OutputPin,
 {
     type Error = DeviceError<BUS::Error, CS::Error>;
 }
 
-impl<'a, Word: Copy + 'static, BUS, CS, D> SpiDevice<Word> for MutexDevice<'a, BUS, CS, D>
+impl<Word: Copy + 'static, BUS, CS, D> SpiDevice<Word> for MutexDevice<'_, BUS, CS, D>
 where
     BUS: SpiBus<Word>,
     CS: OutputPin,